with the enzyme-linked immunosorbent assay ( elisa ) , competitive bindings were performed with a constant amount of horseradish peroxidase-conjugated antibody and various concentrations of unconjugated homologous and heterologous antibodies on cmv antigen-coated elisa wells , and the antigenic determinant specific for each antibody was determined .
C0003241
antibody
C0003248
heterologous