The present state of the Rhesus factor as it affects obstetrics.
D000818:Animals; D005260:Female; D006801:Humans; D008253:Macaca mulatta; D009774:Obstetrics; D011247:Pregnancy; D012204:Rh-Hr Blood-Group System; D014805:Vitamin B 12 / Q000031:analogs & derivatives
D012204:Rh-Hr Blood-Group System; C413332:factor A; D014805:Vitamin B 12
RH FACTORS