title: Obtention of HLA antigen system typifying monospecific sera.
mesh_terms: D000906:Antibodies / Q000302:isolation & purification*; D000918:Antibody Specificity; D005006:Ethnicity; D005260:Female; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D007106:Immune Sera / Q000302:isolation & purification*; D008214:Lymphocytes / Q000276:immunology; D008800:Mexico; D010298:Parity; D049590:Postpartum Period; D011247:Pregnancy
chemical_list: D000906:Antibodies; D006680:HLA Antigens; D007106:Immune Sera