title: Immunological studies on the presence of placental material in retroplacental blood.
mesh_terms: D000042:Absorption; D000818:Animals; D000941:Antigens / Q000302:isolation & purification*; D005340:Fibrinogen; D006801:Humans; D007106:Immune Sera; D005779:Immunodiffusion; D007122:Immunoelectrophoresis; D010920:Placenta / Q000276:immunology*; D010928:Placental Lactogen / Q000032:analysis; D011817:Rabbits / Q000276:immunology; D005719:gamma-Globulins
chemical_list: D000941:Antigens; D007106:Immune Sera; D005719:gamma-Globulins; D005340:Fibrinogen; D010928:Placental Lactogen