title: Use of control antigen to improve the enzyme-linked immunosorbent assay for enzootic bovine leukosis antibodies.
mesh_terms: D000914:Antibodies, Viral / Q000032:analysis*; D000956:Antigens, Viral / Q000276:immunology; D004797:Enzyme-Linked Immunosorbent Assay; D007124:Immunoenzyme Techniques; D001909:Leukemia Virus, Bovine / Q000276:immunology*; D012190:Retroviridae / Q000276:immunology*
chemical_list: D000914:Antibodies, Viral; D000956:Antigens, Viral