char = A;code = 65
char = n;code = 110
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = .;code = 46
result sql = An exposure-response threshold for lung diseases and lung cancer caused by crystalline silica.
An exposure-response threshold for lung diseases and lung cancer caused by crystalline silica.
char = W;code = 87
char = h;code = 104
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = y;code = 121
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = l;code = 108
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = ;code = 32
char = (;code = 40
char = C;code = 67
char = S;code = 83
char = );code = 41
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = s;code = 115
char = k;code = 107
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = i;code = 105
char = f;code = 102
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = h;code = 104
char = e;code = 101
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = m;code = 109
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = b;code = 98
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = .;code = 46
char = ;code = 32
char = E;code = 69
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = m;code = 109
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = v;code = 118
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = b;code = 98
char = i;code = 105
char = g;code = 103
char = u;code = 117
char = o;code = 111
char = u;code = 117
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = .;code = 46
char = ;code = 32
char = E;code = 69
char = x;code = 120
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = m;code = 109
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = a;code = 97
char = ;code = 32
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = h;code = 104
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = C;code = 67
char = S;code = 83
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = r;code = 114
char = a;code = 97
char = t;code = 116
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = u;code = 117
char = g;code = 103
char = h;code = 104
char = ;code = 32
char = n;code = 110
char = o;code = 111
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = o;code = 111
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = l;code = 108
char = u;code = 117
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = m;code = 109
char = i;code = 105
char = c;code = 99
char = e;code = 101
char = ,;code = 44
char = ;code = 32
char = g;code = 103
char = u;code = 117
char = i;code = 105
char = n;code = 110
char = e;code = 101
char = a;code = 97
char = ;code = 32
char = p;code = 112
char = i;code = 105
char = g;code = 103
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = m;code = 109
char = s;code = 115
char = t;code = 116
char = e;code = 101
char = r;code = 114
char = s;code = 115
char = ;;code = 59
char = ;code = 32
char = b;code = 98
char = u;code = 117
char = t;code = 116
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = m;code = 109
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = a;code = 97
char = t;code = 116
char = a;code = 97
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = u;code = 117
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = t;code = 116
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = p;code = 112
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = c;code = 99
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = s;code = 115
char = i;code = 105
char = g;code = 103
char = h;code = 104
char = t;code = 116
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = x;code = 120
char = i;code = 105
char = c;code = 99
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = y;code = 121
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = u;code = 117
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = o;code = 111
char = r;code = 114
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = s;code = 115
char = o;code = 111
char = l;code = 108
char = u;code = 117
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = l;code = 108
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = P;code = 80
char = S;code = 83
char = P;code = 80
char = s;code = 115
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = b;code = 98
char = y;code = 121
char = ;code = 32
char = C;code = 67
char = S;code = 83
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = r;code = 114
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = u;code = 117
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ,;code = 44
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = w;code = 119
char = e;code = 101
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = C;code = 67
char = S;code = 83
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = s;code = 115
char = k;code = 107
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = a;code = 97
char = t;code = 116
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = h;code = 104
char = r;code = 114
char = o;code = 111
char = n;code = 110
char = i;code = 105
char = c;code = 99
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ,;code = 44
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = b;code = 98
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = d;code = 100
char = e;code = 101
char = s;code = 115
char = c;code = 99
char = r;code = 114
char = i;code = 105
char = b;code = 98
char = e;code = 101
char = d;code = 100
char = ,;code = 44
char = ;code = 32
char = h;code = 104
char = a;code = 97
char = v;code = 118
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = b;code = 98
char = s;code = 115
char = t;code = 116
char = a;code = 97
char = n;code = 110
char = t;code = 116
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = e;code = 101
char = m;code = 109
char = p;code = 112
char = i;code = 105
char = r;code = 114
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = p;code = 112
char = p;code = 112
char = o;code = 111
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char = i;code = 105
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char = i;code = 105
char = c;code = 99
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char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = g;code = 103
char = e;code = 101
char = s;code = 115
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char = a;code = 97
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char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = e;code = 101
char = p;code = 112
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = u;code = 117
char = m;code = 109
char = ,;code = 44
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = a;code = 97
char = d;code = 100
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = x;code = 120
char = y;code = 121
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = R;code = 82
char = O;code = 79
char = S;code = 83
char = );code = 41
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = i;code = 105
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = g;code = 103
char = e;code = 101
char = n;code = 110
char = ;code = 32
char = s;code = 115
char = p;code = 112
char = e;code = 101
char = c;code = 99
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = (;code = 40
char = R;code = 82
char = N;code = 78
char = S;code = 83
char = );code = 41
char = ,;code = 44
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = -;code = 45
char = i;code = 105
char = n;code = 110
char = f;code = 102
char = l;code = 108
char = a;code = 97
char = m;code = 109
char = m;code = 109
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = y;code = 121
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = d;code = 100
char = i;code = 105
char = a;code = 97
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = u;code = 117
char = c;code = 99
char = h;code = 104
char = ;code = 32
char = a;code = 97
char = s;code = 115
char = ;code = 32
char = T;code = 84
char = N;code = 78
char = F;code = 70
char = -;code = 45
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = u;code = 117
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = a;code = 97
char = m;code = 109
char = a;code = 97
char = g;code = 103
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = o;code = 111
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = i;code = 105
char = s;code = 115
char = s;code = 115
char = u;code = 117
char = e;code = 101
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = e;code = 101
char = p;code = 112
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = l;code = 108
char = i;code = 105
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = h;code = 104
char = y;code = 121
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = p;code = 112
char = l;code = 108
char = a;code = 97
char = s;code = 115
char = i;code = 105
char = a;code = 97
char = ,;code = 44
char = ;code = 32
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = u;code = 117
char = l;code = 108
char = t;code = 116
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = f;code = 102
char = i;code = 105
char = b;code = 98
char = r;code = 114
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = c;code = 99
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = r;code = 114
char = i;code = 105
char = s;code = 115
char = k;code = 107
char = ;code = 32
char = a;code = 97
char = m;code = 109
char = o;code = 111
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = s;code = 115
char = i;code = 105
char = l;code = 108
char = i;code = 105
char = c;code = 99
char = o;code = 111
char = t;code = 116
char = i;code = 105
char = c;code = 99
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = v;code = 118
char = o;code = 111
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = s;code = 115
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = r;code = 114
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = i;code = 105
char = t;code = 116
char = i;code = 105
char = v;code = 118
char = e;code = 101
char = ;code = 32
char = f;code = 102
char = e;code = 101
char = e;code = 101
char = d;code = 100
char = b;code = 98
char = a;code = 97
char = c;code = 99
char = k;code = 107
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = o;code = 111
char = p;code = 112
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = E;code = 69
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = s;code = 115
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char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = g;code = 103
char = a;code = 97
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = f;code = 102
char = a;code = 97
char = c;code = 99
char = t;code = 116
char = o;code = 111
char = r;code = 114
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = o;code = 111
char = u;code = 117
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = s;code = 115
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char = c;code = 99
char = h;code = 104
char = ;code = 32
char = l;code = 108
char = o;code = 111
char = o;code = 111
char = p;code = 112
char = s;code = 115
char = ;code = 32
char = c;code = 99
char = a;code = 97
char = n;code = 110
char = ;code = 32
char = c;code = 99
char = r;code = 114
char = e;code = 101
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = a;code = 97
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char = d;code = 100
char = i;code = 105
char = s;code = 115
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
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char = s;code = 115
char = t;code = 116
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = ;code = 32
char = w;code = 119
char = i;code = 105
char = t;code = 116
char = h;code = 104
char = ;code = 32
char = e;code = 101
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = a;code = 97
char = t;code = 116
char = e;code = 101
char = d;code = 100
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = R;code = 82
char = O;code = 79
char = S;code = 83
char = ,;code = 44
char = ;code = 32
char = T;code = 84
char = N;code = 78
char = F;code = 70
char = -;code = 45
char = a;code = 97
char = l;code = 108
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = ,;code = 44
char = ;code = 32
char = T;code = 84
char = G;code = 71
char = F;code = 70
char = -;code = 45
char = b;code = 98
char = e;code = 101
char = t;code = 116
char = a;code = 97
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = l;code = 108
char = v;code = 118
char = e;code = 101
char = o;code = 111
char = l;code = 108
char = a;code = 97
char = r;code = 114
char = ;code = 32
char = m;code = 109
char = a;code = 97
char = c;code = 99
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = a;code = 97
char = g;code = 103
char = e;code = 101
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = n;code = 110
char = d;code = 100
char = ;code = 32
char = n;code = 110
char = e;code = 101
char = u;code = 117
char = t;code = 116
char = r;code = 114
char = o;code = 111
char = p;code = 112
char = h;code = 104
char = i;code = 105
char = l;code = 108
char = s;code = 115
char = .;code = 46
char = ;code = 32
char = T;code = 84
char = h;code = 104
char = i;code = 105
char = s;code = 115
char = ;code = 32
char = m;code = 109
char = e;code = 101
char = c;code = 99
char = h;code = 104
char = a;code = 97
char = n;code = 110
char = i;code = 105
char = s;code = 115
char = m;code = 109
char = ;code = 32
char = i;code = 105
char = m;code = 109
char = p;code = 112
char = l;code = 108
char = i;code = 105
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = a;code = 97
char = ;code = 32
char = ";code = 34
char = t;code = 116
char = i;code = 105
char = p;code = 112
char = p;code = 112
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = p;code = 112
char = o;code = 111
char = i;code = 105
char = n;code = 110
char = t;code = 116
char = ";code = 34
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = -;code = 45
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = p;code = 112
char = o;code = 111
char = n;code = 110
char = s;code = 115
char = e;code = 101
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char = r;code = 114
char = e;code = 101
char = l;code = 108
char = a;code = 97
char = t;code = 116
char = i;code = 105
char = o;code = 111
char = n;code = 110
char = .;code = 46
char = ;code = 32
char = A;code = 65
char = p;code = 112
char = p;code = 112
char = l;code = 108
char = y;code = 121
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = i;code = 105
char = s;code = 115
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char = e;code = 101
char = w;code = 119
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char = m;code = 109
char = o;code = 111
char = d;code = 100
char = e;code = 101
char = l;code = 108
char = ;code = 32
char = t;code = 116
char = o;code = 111
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char = e;code = 101
char = p;code = 112
char = i;code = 105
char = d;code = 100
char = e;code = 101
char = m;code = 109
char = i;code = 105
char = o;code = 111
char = l;code = 108
char = o;code = 111
char = g;code = 103
char = i;code = 105
char = c;code = 99
char = a;code = 97
char = l;code = 108
char = ;code = 32
char = d;code = 100
char = a;code = 97
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char = a;code = 97
char = ,;code = 44
char = ;code = 32
char = w;code = 119
char = e;code = 101
char = ;code = 32
char = c;code = 99
char = o;code = 111
char = n;code = 110
char = c;code = 99
char = l;code = 108
char = u;code = 117
char = d;code = 100
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = a;code = 97
char = t;code = 116
char = ;code = 32
char = c;code = 99
char = u;code = 117
char = r;code = 114
char = r;code = 114
char = e;code = 101
char = n;code = 110
char = t;code = 116
char = ;code = 32
char = p;code = 112
char = e;code = 101
char = r;code = 114
char = m;code = 109
char = i;code = 105
char = s;code = 115
char = s;code = 115
char = i;code = 105
char = b;code = 98
char = l;code = 108
char = e;code = 101
char = ;code = 32
char = e;code = 101
char = x;code = 120
char = p;code = 112
char = o;code = 111
char = s;code = 115
char = u;code = 117
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = l;code = 108
char = e;code = 101
char = v;code = 118
char = e;code = 101
char = l;code = 108
char = s;code = 115
char = ,;code = 44
char = ;code = 32
char = o;code = 111
char = n;code = 110
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
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char = o;code = 111
char = r;code = 114
char = d;code = 100
char = e;code = 101
char = r;code = 114
char = ;code = 32
char = o;code = 111
char = f;code = 102
char = ;code = 32
char = 0;code = 48
char = .;code = 46
char = 1;code = 49
char = ;code = 32
char = m;code = 109
char = g;code = 103
char = /;code = 47
char = m;code = 109
char = &;code = 38
char = #;code = 35
char = 1;code = 49
char = 7;code = 55
char = 9;code = 57
char = ;;code = 59
char = ,;code = 44
char = ;code = 32
char = a;code = 97
char = r;code = 114
char = e;code = 101
char = ;code = 32
char = p;code = 112
char = r;code = 114
char = o;code = 111
char = b;code = 98
char = a;code = 97
char = b;code = 98
char = l;code = 108
char = y;code = 121
char = ;code = 32
char = b;code = 98
char = e;code = 101
char = l;code = 108
char = o;code = 111
char = w;code = 119
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = e;code = 101
char = ;code = 32
char = t;code = 116
char = h;code = 104
char = r;code = 114
char = e;code = 101
char = s;code = 115
char = h;code = 104
char = o;code = 111
char = l;code = 108
char = d;code = 100
char = ;code = 32
char = f;code = 102
char = o;code = 111
char = r;code = 114
char = ;code = 32
char = t;code = 116
char = r;code = 114
char = i;code = 105
char = g;code = 103
char = g;code = 103
char = e;code = 101
char = r;code = 114
char = i;code = 105
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = l;code = 108
char = u;code = 117
char = n;code = 110
char = g;code = 103
char = ;code = 32
char = d;code = 100
char = i;code = 105
char = s;code = 115
char = e;code = 101
char = a;code = 97
char = s;code = 115
char = e;code = 101
char = s;code = 115
char = ;code = 32
char = i;code = 105
char = n;code = 110
char = ;code = 32
char = h;code = 104
char = u;code = 117
char = m;code = 109
char = a;code = 97
char = n;code = 110
char = s;code = 115
char = .;code = 46
char = <;code = 60
char = b;code = 98
char = r;code = 114
char = /;code = 47
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result sql = Whether crystalline silica (CS) exposure increases risk of lung cancer in humans without silicosis, and, if so, whether the exposure-response relation has a threshold, have been much debated. Epidemiological evidence is ambiguous and conflicting. Experimental data show that high levels of CS cause lung cancer in rats, although not in other species, including mice, guinea pigs, or hamsters; but the relevance of such animal data to humans has been uncertain. This article applies recent insights into the toxicology of lung diseases caused by poorly soluble particles (PSPs), and by CS in particular, to model the exposure-response relation between CS and risk of lung pathologies such as chronic inflammation, silicosis, fibrosis, and lung cancer. An inflammatory mode of action is described, having substantial empirical support, in which exposure increases alveolar macrophages and neutrophils in the alveolar epithelium, leading to increased reactive oxygen species (ROS) and nitrogen species (RNS), pro-inflammatory mediators such as TNF-alpha, and eventual damage to lung tissue and epithelial hyperplasia, resulting in fibrosis and increased lung cancer risk among silicotics. This mode of action involves several positive feedback loops. Exposures that increase the gain factors around such loops can create a disease state with elevated levels of ROS, TNF-alpha, TGF-beta, alveolar macrophages, and neutrophils. This mechanism implies a "tipping point" threshold for the exposure-response relation. Applying this new model to epidemiological data, we conclude that current permissible exposure levels, on the order of 0.1 mg/m³, are probably below the threshold for triggering lung diseases in humans.

Publication: Risk Anal. 2011 Oct ;31(10)::1543-60. :doi: 10.1111/j.1539-6924.2011.01610.x.
Publication Date: 2011 Oct
Study Author(s): Cox, Louis Anthony Tony;
Institution: Cox Associates, 503 Franklin Street, Denver, CO 80218, USA. [email protected]
Shortcut link to this study:
Whether crystalline silica (CS) exposure increases risk of lung cancer in humans without silicosis, and, if so, whether the exposure-response relation has a threshold, have been much debated. Epidemiological evidence is ambiguous and conflicting. Experimental data show that high levels of CS cause lung cancer in rats, although not in other species, including mice, guinea pigs, or hamsters; but the relevance of such animal data to humans has been uncertain. This article applies recent insights into the toxicology of lung diseases caused by poorly soluble particles (PSPs), and by CS in particular, to model the exposure-response relation between CS and risk of lung pathologies such as chronic inflammation, silicosis, fibrosis, and lung cancer. An inflammatory mode of action is described, having substantial empirical support, in which exposure increases alveolar macrophages and neutrophils in the alveolar epithelium, leading to increased reactive oxygen species (ROS) and nitrogen species (RNS), pro-inflammatory mediators such as TNF-alpha, and eventual damage to lung tissue and epithelial hyperplasia, resulting in fibrosis and increased lung cancer risk among silicotics. This mode of action involves several positive feedback loops. Exposures that increase the gain factors around such loops can create a disease state with elevated levels of ROS, TNF-alpha, TGF-beta, alveolar macrophages, and neutrophils. This mechanism implies a "tipping point" threshold for the exposure-response relation. Applying this new model to epidemiological data, we conclude that current permissible exposure levels, on the order of 0.1 mg/m³, are probably below the threshold for triggering lung diseases in humans.
PMID: 21477084

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