Variations in isolations of pathogenic bacteria from the udders of cows during a six-month period.
D000818:Animals; D002417:Cattle; D005260:Female; D008321:Mammary Glands, Animal / Q000382:microbiology; D008414:Mastitis, Bovine / Q000382:microbiology*; D013210:Staphylococcus / Q000302:isolation & purification*; D013291:Streptococcus / Q000302:isolation & purification*