title: Variable resistance of cows to Streptococcus agalactiae mastitis.
mesh_terms: D000531:Altitude; D000821:Animal Feed; D000818:Animals; D002417:Cattle; D005260:Female; D008414:Mastitis, Bovine; D008892:Milk / Q000382:microbiology; D013290:Streptococcal Infections / Q000662:veterinary*; D013291:Streptococcus / Q000302:isolation & purification