Does maternal immunity to male antigen affect the sex ratio of the young?
D000937:Antigen-Antibody Reactions; D005260:Female; D006801:Humans; D007109:Immunity; D008297:Male; D008431:Maternal-Fetal Exchange; D010829:Physiological Phenomena; D011247:Pregnancy; D019849:Sex Determination Processes; D012744:Sex Ratio
ANTIGEN-ANTIBODY REACTIONS; MATERNAL-FETAL EXCHANGE; SEX DETERMINATION