BVD virus and pregnancy diagnosis in cattle.
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D000818:Animals; D001912:Bovine Virus Diarrhea-Mucosal Disease / Q000517:prevention & control* / Q000635:transmission*; D002417:Cattle; D005260:Female; D010173:Palpation / Q000592:standards / Q000662:veterinary; D011247:Pregnancy; D011258:Pregnancy Tests / Q000662:veterinary*; D012007:Rectum