[Morphological changes in the internal organs in chronic streptococcal infection].

A histological and histochemical study was made (for a period of from 24 hours to 27 weeks) of the internal organs of albino mice after a single intraperitoneal injection of the L-forms of beta-hemolytic streptococcus, group A. The following progressive pathological process (myocarditis, hepatitis, pyelonephritis) developed against an intense allergic background with a resultant systemic lesion of the tissues.