NASA-approved hardware was designed for an experiment involving in-flight fixation of 4.8-day-old seedlings of Brassica perviri-dis. The hardware is inexpensive, reliable, and simple to construct. This hardware aboard flight 61-C of space shuttle Columbia functioned perfectly, and required less than 0.5 hr of crew time for training. Analyses of cellular ultrastructure indicated excellent ultrastructural preservation.
Bibliographical noteFunding Information:
This research was supported by a grant from the Life Sciences Program of the Na- tional Aeronautics and Space Administration. I thank C. E. McClelen for his excellent technical assistance.
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