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Induction and decay of thermotolerance in rainbow trout fibroblasts

✍ Scribed by D. D. Mosser; J. van Oostrom; N. C. Bols

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
911 KB
Volume
132
Category
Article
ISSN
0021-9541

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✦ Synopsis

Thermotolerance was studied in the rainbow trout fibroblast cell line RTG-2. RTG-2 cultures that had been incubated at 28OC for 24 h were better able to withstand ultimately lethal temperatures above 28OC than RTG-2 cultures that had been maintained at the routine growth temperature of 22OC. This thermotolerance developed rapidly between 3 and 6 h and was fully developed by 24 h at 28OC. After development for 24 h r at 28OC, thermotolerance showed little change over 72 h at 0 and 5OC but approximately a 40 and 60% reduction at 10 and 22OC, respectively. This is the first demonstration of heat-induced thermal resistance in the cells of a poikilothermic vertebrate.

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