The number and viability of microorganism specimens Bacillus spp. isolated from permafrost soil remained unchanged after incubation at temperatures of -16-37°C. Experiments on F1 CBA/Black-6 mice showed that incubation of bacteria at -5°C for 72 h promotes a decrease in their toxicity and an increase in their immunostimulating effect.
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Translated from Byulleten’ Eksperimental’noi Biologii i Meditsiny, Vol. 158, No. 12, pp. 737-741, December, 2014
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Kalyonova, L.F., Novikova, M.A., Subbotin, A.M. et al. Effects of Temperature on Biological Activity of Permafrost Microorganisms. Bull Exp Biol Med 158, 772–775 (2015). https://doi.org/10.1007/s10517-015-2859-z
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DOI: https://doi.org/10.1007/s10517-015-2859-z