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Figure 5
The left photograph is a 9° precession photograph of a native lysozyme crystal with sucrose cryo-protectant at about −50 C. The right photograph is the same cryo-cooled crystal after several days of X-ray exposure (reproduced from Haas, 1968bBB16).

IUCrJ
Volume 7| Part 2| March 2020| Pages 148-157
ISSN: 2052-2525
https://doi.org/10.1107/S2052252519016993