Natural killer cell activity during pregnancy.
D001724:Birth Weight; D003602:Cytotoxicity, Immunologic; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007236:Infant, Small for Gestational Age; D007694:Killer Cells, Natural / Q000276:immunology*; D010920:Placenta / Q000473:pathology; D011247:Pregnancy