title: Protein A-enzyme monoconjugate as a versatile tool for enzyme immunoassays.
mesh_terms: D006063:Chorionic Gonadotropin / Q000032:analysis*; D006801:Humans; D007124:Immunoenzyme Techniques; D007074:Immunoglobulin G; D009757:Nylons; D013205:Staphylococcal Protein A
chemical_list: D006063:Chorionic Gonadotropin; D007074:Immunoglobulin G; D009757:Nylons; D013205:Staphylococcal Protein A