title: Cross-reactions among group A streptococci. II. Further analysis of antigens related to type-specificity and protection.
mesh_terms: D000042:Absorption; D000818:Animals; D000941:Antigens / Q000032:analysis*; D004586:Electrophoresis; D006241:Haptens / Q000032:analysis; D007106:Immune Sera; D005779:Immunodiffusion; D011233:Precipitin Tests; D011817:Rabbits; D013291:Streptococcus / Q000276:immunology*
chemical_list: D000941:Antigens; D006241:Haptens; D007106:Immune Sera