title: [Complement fixation reaction (CFR) in adenovirus infections of calves].
abstract: Studied was the complement-fixation reaction in the diagnosis of the adenovirus infections in calves. It was found that the test is specific and sensitive. A virus suspension of tissue cultures was used as an antigen, its titer varying from 1:8 up to 1:16. Specific complement-fixing antibodies were detected mainly in survivals at serum dilution of up to 1:64. Specific antibodies were established in undiluted sera too taken from animals of infected herds. In some of the tested sera there were both complement-fixing and precipitating antibodies. In calves treated with a live vaccine against adenoviruses the dynamics of the complement-fixing antibodies was followed up.
mesh_terms: D000257:Adenoviridae Infections / Q000276:immunology / Q000662:veterinary*; D000818:Animals; D000956:Antigens, Viral / Q000032:analysis; D002031:Bulgaria; D002417:Cattle; D002418:Cattle Diseases / Q000276:immunology*; D003168:Complement Fixation Tests / Q000379:methods*; D007106:Immune Sera / Q000032:analysis; D014611:Vaccination / Q000662:veterinary
chemical_list: D000956:Antigens, Viral; D007106:Immune Sera
vernacular_title: Reaktsiiata za svurzvane na komplementa (RSK) pri adenovirusnite infektsii po teletata