title: A contribution to the Ny a problem.
mesh_terms: D000906:Antibodies; D000941:Antigens; D001789:Blood Group Antigens; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D005787:Gene Frequency; D005799:Genes, Dominant; D005828:Genetics, Population; D006386:Hemagglutination Tests; D006801:Humans; D007106:Immune Sera; D008297:Male; D011247:Pregnancy
chemical_list: D000906:Antibodies; D000941:Antigens; D001789:Blood Group Antigens; D007106:Immune Sera