[Identification with the aid of various serological reactions of L forms of streptococci isolated from the live organism]. / Identifikatsiia pri pomishchi razlichnykh serologicheskikh reaktsii L-form atreptokokkov, bydelennykh iz zhivogo organizma

Growth inhibition, agglutination, precipitation, and passive hemagglutination tests were used for the identification of the L-forms of streptococci isolated from the organism of experimental rabbits both after the infection with the L-forms of streptococci and with the streptococci of group A. The tests were positive not only with the antiserum of homologous, but also of heterologous strains of the L-form of streptococcus, group A. The L-form cultures isolated from the experimental animals failed to differ from the laboratory strain of the L-forms of streptococcus, group A, by serological properties.

[Experimental study of the role of L-forms of hemolytic streptococci in infectious pathology]. / Eksperimental'noe izuchenie roli L-form gemoliticheskogo streptokokka v infektsionnoi patologii

Rabbits were infected by intraperitoneal implantation of a chamber with the L-forms of hemolytic streptococcus. Experiments demonstrated that no symptoms of an acute disease followed. Antibodies against the L-form was revealed in the blood serum in low titres. Cardiac valves, particularly the mitral, were affected in all the experiments animals. Histological study showed that changes in the tissues of the heart approched the rheumatic ones by special signs. L-forms were isolated (in the cultures) from the implanted chamber and the blood for up to 15 days after the infection.