Staphylococci of different virulences infused successively into bovine udders.
D000818:Animals; D002417:Cattle; D005260:Female; D008321:Mammary Glands, Animal / Q000473:pathology*; D008414:Mastitis, Bovine / Q000473:pathology*; D013203:Staphylococcal Infections / Q000473:pathology / Q000662:veterinary*