title: Maternal HL-A antibodies and fetal sex.
abstract: In a study of 960 pregnancies a significantly higher male to female birth ratio was found among primigravidae who developed HL-A antibodies, which was highest where these were monospecific. In the whole group male births predominated in women with antibodies to HL-A 1 and 11 (first locus) and HL-A 5, 12, and 13 and TYT (second locus).
mesh_terms: D000917:Antibody Formation; D005260:Female; D005333:Fetus; D006680:HLA Antigens; D006649:Histocompatibility Antigens; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D010298:Parity; D011247:Pregnancy; D012744:Sex Ratio
chemical_list: D006680:HLA Antigens; D006649:Histocompatibility Antigens