title: Dot-enzyme linked immunosorbent assay for the detection of antibodies in bovine brucellosis.
abstract: A dot-enzyme linked immunosorbent assay (dot-ELISA) for the detection of antibodies in bovine brucellosis using soluble antigens extracted from Brucella abortus S-99 is described in which antigen was deposited on a nitrocellulose sheet (0.5 x 0.5 cm) bound to a plastic strip and the unsaturated sites blocked by a solution of spray-dried milk powder. Sera were tested at dilutions of 1:800 and 1:1600, using rabbit anti-bovine-immunoglobulin or protein-A coupled to peroxidase as conjugates and diamino-benzidine as substrate. A positive reaction was clearly indicated by a brown dot on the nitrocellulose sheet. Using antigen-coated, pre-blocked strips, the test could be completed within 45 minutes.
authors.affiliation: National Institute of Immunology, New Delhi, India.
authors.forename: H V
authors.initials: HV
authors.lastname: Batra
authors.forename: P
authors.initials: P
authors.lastname: Chand
authors.forename: L
authors.initials: L
authors.lastname: Ganju
authors.forename: R
authors.initials: R
authors.lastname: Mukherjee
authors.forename: J R
authors.initials: JR
authors.lastname: Sadana
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000032:analysis*; D002003:Brucella abortus / Q000276:immunology*; D002007:Brucellosis, Bovine / Q000276:immunology*; D002417:Cattle; D004797:Enzyme-Linked Immunosorbent Assay / Q000662:veterinary
chemical_list: D000907:Antibodies, Bacterial