title: Specific radioimmunoassay for the detection of a purified porcine zona pellucida antigen (PPZA).
mesh_terms: D000818:Animals; D000906:Antibodies / Q000032:analysis; D000941:Antigens / Q000032:analysis*; D005260:Female; D007457:Iodine Radioisotopes; D009865:Oocytes / Q000276:immunology; D010063:Ovum / Q000276:immunology*; D011817:Rabbits / Q000276:immunology; D011863:Radioimmunoassay / Q000379:methods*; D013552:Swine; D015044:Zona Pellucida / Q000276:immunology*
chemical_list: D000906:Antibodies; D000941:Antigens; D007457:Iodine Radioisotopes