title: Embryo transfer and transmission of bovine leukosis virus in a dairy herd.
abstract: Transmission of bovine leukosis virus (BLV) by embryo transfer was investigated in a large commercial Holstein herd. One hundred and sixteen calves, transplanted as embryos from BLV-positive cows into BLV-negative heifers, were serologically negative, as were recipients, whereas 5 of 29 (17%) calves transplanted as embryos into BLV-positive recipients were infected with BLV, as evidenced by antibodies in the agar gel immunodiffusion test.
mesh_terms: D000818:Animals; D000914:Antibodies, Viral / Q000276:immunology; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology / Q000382:microbiology / Q000635:transmission*; D004624:Embryo Transfer / Q000662:veterinary*; D005260:Female; D007938:Leukemia / Q000276:immunology / Q000382:microbiology / Q000635:transmission / Q000662:veterinary*; D001909:Leukemia Virus, Bovine / Q000276:immunology
chemical_list: D000914:Antibodies, Viral