Contact between the mastitis laboratory and herd.
D000818:Animals; D002417:Cattle; D002452:Cell Count; D019411:Clinical Laboratory Techniques / Q000662:veterinary; D003612:Dairying; D005260:Female; D013294:Lactococcus lactis / Q000302:isolation & purification; D008414:Mastitis, Bovine / Q000175:diagnosis* / Q000382:microbiology / Q000517:prevention & control; D008892:Milk / Q000382:microbiology*; D013048:Specimen Handling; D013203:Staphylococcal Infections / Q000662:veterinary*; D013210:Staphylococcus / Q000302:isolation & purification; D013290:Streptococcal Infections / Q000662:veterinary