char = P;code = 80 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = i;code = 105 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = a;code = 97 char = m;code = 109 char = -;code = 45 char = t;code = 116 char = i;code = 105 char = l;code = 108 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 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 = l;code = 108 char = l;code = 108 char = i;code = 105 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 = 32 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = q;code = 113 char = u;code = 117 char = i;code = 105 char = r;code = 114 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = i;code = 105 char = m;code = 109 char = i;code = 105 char = z;code = 122 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = r;code = 114 char = r;code = 114 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = -;code = 45 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = c;code = 99 char = r;code = 114 char = y;code = 121 char = o;code = 111 char = -;code = 45 char = E;code = 69 char = M;code = 77 char = .;code = 46 result sql = Precise beam-tilt alignment and collimation are required to minimize the phase error associated with coma in high-resolution cryo-EM.
Precise beam-tilt alignment and collimation are required to minimize the phase error associated with coma in high-resolution cryo-EM.char = E;code = 69 char = l;code = 108 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = m;code = 109 char = i;code = 105 char = c;code = 99 char = r;code = 114 char = o;code = 111 char = s;code = 115 char = c;code = 99 char = o;code = 111 char = p;code = 112 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 4;code = 52 char = n;code = 110 char = m;code = 109 char = ;code = 32 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = q;code = 113 char = u;code = 117 char = i;code = 105 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = r;code = 114 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = r;code = 114 char = e;code = 101 char = f;code = 102 char = u;code = 117 char = l;code = 108 char = ;code = 32 char = a;code = 97 char = d;code = 100 char = j;code = 106 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = l;code = 108 char = l;code = 108 char = u;code = 117 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = a;code = 97 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = n;code = 110 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = 0;code = 48 char = .;code = 46 char = 8;code = 56 char = n;code = 110 char = m;code = 109 char = .;code = 46 char = ;code = 32 char = T;code = 84 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 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 = 45 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = g;code = 103 char = n;code = 110 char = m;code = 109 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = w;code = 119 char = a;code = 97 char = y;code = 121 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = u;code = 117 char = f;code = 102 char = f;code = 102 char = i;code = 105 char = c;code = 99 char = i;code = 105 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ,;code = 44 char = ;code = 32 char = f;code = 102 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = a;code = 97 char = m;code = 109 char = p;code = 112 char = l;code = 108 char = e;code = 101 char = ,;code = 44 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = v;code = 118 char = o;code = 111 char = i;code = 105 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = d;code = 100 char = u;code = 117 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = r;code = 114 char = r;code = 114 char = o;code = 111 char = r;code = 114 char = s;code = 115 char = ,;code = 44 char = ;code = 32 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 = e;code = 101 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = d;code = 100 char = u;code = 117 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = .;code = 46 char = ;code = 32 char = I;code = 73 char = n;code = 110 char = ;code = 32 char = a;code = 97 char = d;code = 100 char = d;code = 100 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ,;code = 44 char = ;code = 32 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = ;code = 32 char = m;code = 109 char = u;code = 117 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = l;code = 108 char = s;code = 115 char = o;code = 111 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = s;code = 115 char = u;code = 117 char = r;code = 114 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 = o;code = 111 char = f;code = 102 char = f;code = 102 char = -;code = 45 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = d;code = 100 char = o;code = 111 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = u;code = 117 char = p;code = 112 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = a;code = 97 char = t;code = 116 char = a;code = 97 char = ;code = 32 char = q;code = 113 char = u;code = 117 char = a;code = 97 char = l;code = 108 char = i;code = 105 char = t;code = 116 char = y;code = 121 char = ;code = 32 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = h;code = 104 char = i;code = 105 char = g;code = 103 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = l;code = 108 char = u;code = 117 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = .;code = 46 char = ;code = 32 char = W;code = 87 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 = u;code = 117 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = e;code = 101 char = m;code = 109 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = i;code = 105 char = z;code = 122 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 = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = a;code = 97 char = r;code = 114 char = d;code = 100 char = ;code = 32 char = C;code = 67 char = T;code = 84 char = F;code = 70 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = r;code = 114 char = r;code = 114 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = d;code = 100 char = o;code = 111 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = o;code = 111 char = u;code = 117 char = n;code = 110 char = t;code = 116 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 = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = r;code = 114 char = r;code = 114 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = s;code = 115 char = o;code = 111 char = c;code = 99 char = i;code = 105 char = a;code = 97 char = t;code = 116 char = e;code = 101 char = d;code = 100 char = ;code = 32 char = w;code = 119 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = x;code = 120 char = p;code = 112 char = l;code = 108 char = a;code = 97 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 = c;code = 99 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = b;code = 98 char = o;code = 111 char = t;code = 116 char = h;code = 104 char = ;code = 32 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = a;code = 97 char = n;code = 110 char = d;code = 100 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = y;code = 121 char = p;code = 112 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = m;code = 109 char = o;code = 111 char = s;code = 115 char = t;code = 116 char = ;code = 32 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = u;code = 117 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = s;code = 115 char = o;code = 111 char = m;code = 109 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = p;code = 112 char = o;code = 111 char = n;code = 110 char = e;code = 101 char = n;code = 110 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = f;code = 102 char = -;code = 45 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = m;code = 109 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = w;code = 119 char = e;code = 101 char = l;code = 108 char = l;code = 108 char = -;code = 45 char = k;code = 107 char = n;code = 110 char = o;code = 111 char = w;code = 119 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = h;code = 104 char = i;code = 105 char = f;code = 102 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = l;code = 108 char = e;code = 101 char = c;code = 99 char = t;code = 116 char = r;code = 114 char = o;code = 111 char = n;code = 110 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = f;code = 102 char = f;code = 102 char = r;code = 114 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 = p;code = 112 char = a;code = 97 char = t;code = 116 char = t;code = 116 char = e;code = 101 char = r;code = 114 char = n;code = 110 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 = v;code = 118 char = e;code = 101 char = ;code = 32 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 = o;code = 111 char = p;code = 112 char = t;code = 116 char = i;code = 105 char = c;code = 99 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = a;code = 97 char = t;code = 116 char = ;code = 32 char = o;code = 111 char = c;code = 99 char = c;code = 99 char = u;code = 117 char = r;code = 114 char = s;code = 115 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = i;code = 105 char = l;code = 108 char = l;code = 108 char = u;code = 117 char = m;code = 109 char = i;code = 105 char = n;code = 110 char = a;code = 97 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 = n;code = 110 char = o;code = 111 char = t;code = 116 char = ;code = 32 char = p;code = 112 char = a;code = 97 char = r;code = 114 char = a;code = 97 char = l;code = 108 char = l;code = 108 char = e;code = 101 char = l;code = 108 char = ;code = 32 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 = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = .;code = 46 char = ;code = 32 char = W;code = 87 char = e;code = 101 char = ;code = 32 char = r;code = 114 char = e;code = 101 char = v;code = 118 char = i;code = 105 char = e;code = 101 char = w;code = 119 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 = 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 = c;code = 99 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = d;code = 100 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = i;code = 105 char = c;code = 99 char = h;code = 104 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = c;code = 99 char = a;code = 97 char = u;code = 117 char = s;code = 115 char = e;code = 101 char = s;code = 115 char = ;code = 32 char = u;code = 117 char = n;code = 110 char = a;code = 97 char = c;code = 99 char = c;code = 99 char = e;code = 101 char = p;code = 112 char = t;code = 116 char = a;code = 97 char = b;code = 98 char = l;code = 108 char = y;code = 121 char = ;code = 32 char = l;code = 108 char = a;code = 97 char = r;code = 114 char = g;code = 103 char = e;code = 101 char = ;code = 32 char = p;code = 112 char = h;code = 104 char = a;code = 97 char = s;code = 115 char = e;code = 101 char = ;code = 32 char = e;code = 101 char = r;code = 114 char = r;code = 114 char = o;code = 111 char = r;code = 114 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 = w;code = 119 char = e;code = 101 char = ;code = 32 char = d;code = 100 char = i;code = 105 char = s;code = 115 char = c;code = 99 char = u;code = 117 char = s;code = 115 char = s;code = 115 char = ;code = 32 char = s;code = 115 char = t;code = 116 char = e;code = 101 char = p;code = 112 char = s;code = 115 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 = a;code = 97 char = n;code = 110 char = ;code = 32 char = b;code = 98 char = e;code = 101 char = ;code = 32 char = t;code = 116 char = a;code = 97 char = k;code = 107 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = w;code = 119 char = h;code = 104 char = e;code = 101 char = n;code = 110 char = ;code = 32 char = s;code = 115 char = e;code = 101 char = t;code = 116 char = t;code = 116 char = i;code = 105 char = n;code = 110 char = g;code = 103 char = ;code = 32 char = u;code = 117 char = p;code = 112 char = ;code = 32 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = n;code = 110 char = d;code = 100 char = i;code = 105 char = t;code = 116 char = i;code = 105 char = o;code = 111 char = n;code = 110 char = s;code = 115 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = ;code = 32 char = i;code = 105 char = l;code = 108 char = l;code = 108 char = u;code = 117 char = m;code = 109 char = i;code = 105 char = n;code = 110 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 = o;code = 111 char = ;code = 32 char = a;code = 97 char = s;code = 115 char = ;code = 32 char = t;code = 116 char = o;code = 111 char = ;code = 32 char = e;code = 101 char = n;code = 110 char = s;code = 115 char = u;code = 117 char = r;code = 114 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 = n;code = 110 char = e;code = 101 char = i;code = 105 char = t;code = 116 char = h;code = 104 char = e;code = 101 char = r;code = 114 char = ;code = 32 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = a;code = 97 char = l;code = 108 char = ;code = 32 char = n;code = 110 char = o;code = 111 char = r;code = 114 char = ;code = 32 char = o;code = 111 char = f;code = 102 char = f;code = 102 char = -;code = 45 char = a;code = 97 char = x;code = 120 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = c;code = 99 char = o;code = 111 char = m;code = 109 char = a;code = 97 char = ;code = 32 char = i;code = 105 char = s;code = 115 char = ;code = 32 char = a;code = 97 char = ;code = 32 char = p;code = 112 char = r;code = 114 char = o;code = 111 char = b;code = 98 char = l;code = 108 char = e;code = 101 char = m;code = 109 char = .;code = 46 char = <;code = 60 char = b;code = 98 char = r;code = 114 char = /;code = 47 char = >;code = 62 result sql = Electron microscopy at a resolution of 0.4nm or better requires more careful adjustment of the illumination than is the case at a resolution of 0.8nm. The use of current-axis alignment is not always sufficient, for example, to avoid the introduction of large phase errors, at higher resolution, due to axial coma. In addition, one must also ensure that off-axis coma does not corrupt the data quality at the higher resolution. We particularly emphasize that the standard CTF correction does not account for the phase error associated with coma. We explain the cause of both axial coma and the typically most troublesome component of off-axis coma in terms of the well-known shift of the electron diffraction pattern relative to the optical axis that occurs when the illumination is not parallel to the axis. We review the experimental conditions under which coma causes unacceptably large phase errors, and we discuss steps that can be taken when setting up the conditions of illumination, so as to ensure that neither axial nor off-axis coma is a problem.
Publication: J. Struct. Biol. 2011 Apr ;174(1)::1-10. :doi: 10.1016/j.jsb.2010.12.005.
Publication Date: 2011 Apr
Study Author(s): Glaeser, Robert M;Typke, Dieter;Tiemeijer, Peter C;Pulokas, James;Cheng, Anchi;
Institution: Life Sciences Division, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720, USA.
[email protected]
Shortcut link to this study:
Electron microscopy at a resolution of 0.4nm or better requires more careful adjustment of the illumination than is the case at a resolution of 0.8nm. The use of current-axis alignment is not always sufficient, for example, to avoid the introduction of large phase errors, at higher resolution, due to axial coma. In addition, one must also ensure that off-axis coma does not corrupt the data quality at the higher resolution. We particularly emphasize that the standard CTF correction does not account for the phase error associated with coma. We explain the cause of both axial coma and the typically most troublesome component of off-axis coma in terms of the well-known shift of the electron diffraction pattern relative to the optical axis that occurs when the illumination is not parallel to the axis. We review the experimental conditions under which coma causes unacceptably large phase errors, and we discuss steps that can be taken when setting up the conditions of illumination, so as to ensure that neither axial nor off-axis coma is a problem.
PMID: 21182964