title: Nitrogen balance in pregnancy and lactation in women whose protein intake is marginal.
mesh_terms: D004044:Dietary Proteins; D005260:Female; D006801:Humans; D007774:Lactation; D009584:Nitrogen / Q000378:metabolism* / Q000652:urine; D011247:Pregnancy
chemical_list: D004044:Dietary Proteins; D009584:Nitrogen