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Figure 6
The cryo-cooling apparatus used at Purdue University in 1968 for lactate dehydrogenase data collection (Haas & Rossmann, 1970BB19). The Dewar on the left is as shown in Fig. 4[link], while the Dewar on the right is transport for refilling. (Photograph by D. Haas.)

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