Survival of Pneumococci and Streptococci Cultures in the Dry State
نویسنده
چکیده
The following is an observation on the survival of dry cultures of pneumococci and streptococci for seven years under unusual and adverse conditions of storage. Dry cultures of 27 pneumococci and 10 streptococci prepared by the Division of Laboratories and Research of the Department of Health of New York (Wadsworth, 1939) were given to the author on 17th July, 1940. All the cultures were examined between 21st and 24th February, 1947. The tubes were opened and subcultured in glucose broth and after an incubation period of nearly 18 hours were plated on blood agar plates. The dates of preparation of the cultures and the survival period were as follows :
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