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Figure 1
Examples of defects in virus crystals. In (a) are advancing step edges on a crystal of brome mosaic virus (BMV) and in (b) the surface of a BMV crystal. The layers are pocked with vacancies, and the step edges are extremely rough and irregular, reflecting the excessive incorporation of impurities as they progress. In (c) lines and clusters of absences characterize a satellite tobacco mosaic virus (STMV) crystal. In (d) are local dislocations of limited extent and in (e) a long planar dislocation on the surface of a cucumber mosaic virus (CMV) crystal. In (f), the network of stacking faults permeating an STMV crystal produce a mosaic block structure in the crystal. |


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