title: Further investigation of nonspecific biological substance in anti-Rh (D) preparations.
mesh_terms: D006801:Humans; D007518:Isoantibodies / Q000302:isolation & purification*; D012204:Rh-Hr Blood-Group System / Q000276:immunology*
chemical_list: D007518:Isoantibodies; D012204:Rh-Hr Blood-Group System