title: Nature of antibodies to Campylobacter fetus in preputial secretions from a vaccinated bull.
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis*; D002167:Campylobacter / Q000276:immunology*; D002168:Campylobacter fetus / Q000276:immunology*; D002417:Cattle / Q000276:immunology*; D008297:Male; D010413:Penis / Q000276:immunology*; D014611:Vaccination / Q000662:veterinary*
chemical_list: D000907:Antibodies, Bacterial