title: Group G streptococci in the udders of a Pennsylvania dairy herd.
mesh_terms: D000818:Animals; D001431:Bacteriological Techniques; D002417:Cattle; D002418:Cattle Diseases / Q000188:drug therapy / Q000453:epidemiology* / Q000382:microbiology; D005260:Female; D008321:Mammary Glands, Animal; D008414:Mastitis, Bovine / Q000382:microbiology; D008892:Milk / Q000382:microbiology; D010406:Penicillins / Q000627:therapeutic use; D010414:Pennsylvania; D013290:Streptococcal Infections / Q000188:drug therapy / Q000453:epidemiology / Q000382:microbiology / Q000662:veterinary*; D013291:Streptococcus / Q000302:isolation & purification
chemical_list: D010406:Penicillins