[A study of M-substance in cultures of streptococci isolated during the course of various streptococcal diseases in different cities of the USSR].
D006801:Humans; D013290:Streptococcal Infections / Q000382:microbiology*; D013291:Streptococcus / Q000032:analysis*
Isuchenie M-substantsii u kul'turakh streptokokka, vydelennykh pri razlichnykh streptokokkovykh zabolevaniiakh v otdel'nykh gorodakh SSSR.