Search PubMedSearch

PubMed · 3546702

Cryo-transfer revised.

Abstract

Vapour deposition of water is a major problem in cryo-transfer and cryo-observation of frozen specimens. The use of (sliding) shields to protect the specimen during transfer has been evaluated and was found to be a fail-safe procedure. Shielding the specimen with solidified coolant is proposed as an alternative or additional protection. The protective layer (ethane, Freon 22) can be evaporated in the high vacuum of the microscope. The evaporating coolant will carry away water films deposited on top. The temperature of coolant evaporation is low enough to prevent possible devitrification of water in the specimen itself.

Explore related subjects

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

P M Frederik, W M Busing. 1986. Cryo-transfer revised.. https://doi.org/10.1111/j.1365-2818.1986.tb02802.x

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

Epiphytic populations of Pseudomonas syringae on barley.

The epiphytic populations of Pseudomonas syringae were monitored on 23 barley entries planted in the field in four replications during the summer of 1986, and on six selected entries during the summer of 1987, from the second-leaf stage until senescence. Populations were initially low (0-3 log colony-forming units (cfu) per leaf) in all but one entry; they generally increased throughout the season, and at the end they reached 3-7 log cfu/leaf. Significant differences among the average epiphytic populations were found in the 1986 trial; only one entry, however, had a significantly different average population in the 1987 trial. The slopes of population increase were also compared: significant differences were observed in 1986 but not in 1987. In addition to epiphytic population counts, the percentage of ice nucleation active bacteria was determined in the population isolated from each leaf sample, and averaged throughout the season for each entry. Significant differences were observed in 1986 and in 1987. When the entries were ranked according to their average epiphytic population and compared between the two experiments, they were found to be very similar. The same was not true for the other parameters studied in the experiment.

Freezing