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![[Figure 2]](id5009fig2mag.jpg)
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Figure 2
Vector plots of beam-image shift-induced coma and astigmatism. Vectors indicate the amplitude and direction of the beam-image shift-induced beam tilt (a) before and (b) after correction. The scale bar for (a) is 1 mrad and that for (b) is 0.2 mrad. Lines show the amplitude and direction of astigmatism, as defined by Mindell & Grigorieff (2003  ), (c) before and (d) after correction. The scale bars in both panels are 2000 Å. |
![[Figure 2]](id5009fig2.jpg)
 | STRUCTURAL BIOLOGY |
ISSN: 2059-7983
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