title: Serological relationships of type I antigens of group B streptococci.
abstract: Some of the complex antigenic relationships of type I group B streptococci from various clinical sources were defined by means of immunodiffusion, absorption, and precipitin tests. Three predominant types are described: Ia, Ib, and Ii. Methods for preparing antisera for differentiating type I strains are presented.
mesh_terms: D000042:Absorption; D000941:Antigens; D005779:Immunodiffusion; D011233:Precipitin Tests; D012703:Serotyping; D013291:Streptococcus / Q000145:classification / Q000276:immunology*
chemical_list: D000941:Antigens