title: Variation of type antigens of group-B streptococci. II. Studies on the in-vitro variation of the X-antigen and other type antigens.
mesh_terms: D000818:Animals; D000942:Antigens, Bacterial / Q000032:analysis* / Q000235:genetics; D002417:Cattle; D014644:Genetic Variation; D008414:Mastitis, Bovine / Q000276:immunology / Q000382:microbiology; D013292:Streptococcus agalactiae / Q000276:immunology*
chemical_list: D000942:Antigens, Bacterial