title: Persistent infection with Brucella abortus biotype 1 in a cow.
authors: Veterinary Research Institute, Onderstepoort, Republic of South Africa.
authors: S
authors: S
authors: Herr
authors: L M
authors: LM
authors: Ribeiro
authors: F
authors: F
authors: Chaparro
mesh_terms: D000818:Animals; D002003:Brucella abortus / Q000276:immunology; D002007:Brucellosis, Bovine / Q000276:immunology*; D002417:Cattle; D003168:Complement Fixation Tests; D005260:Female; D013997:Time Factors