Streptococcus faecalis preservation conditions

Preservation conditions of Streptococcus faecalis, suspending cells in stable growth phase in 10% glycerol or other low freezing point liquid, sealing in an ampoule tube, and then controlling the cooling rate so that the ampoule tube temperature is gradually lowered to -35 ° C, then placed Store in a liquid nitrogen tank at -150 to -196 °C. Most microorganisms such as viruses, bacteriophages, various bacteria, actinomycetes, yeasts and protozoa, especially those that have difficulty in freeze-drying, can be preserved for a long time.


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