we developed a solid-phase two-site immunoenzymometric assay ( iema ) of the estrogen-induced 52-kda cathepsin d ( ec 3.4.23.5 ) and its processed forms ( 48-kda and 34-kda proteins ) in cytosols of breast cancer tissues , using two monoclonal antibodies directed against two different epitopes of these antigens .
C0003316
epitopes
C0003320
antigens