title: Composition of amniotic fluid and maternal blood through pregnancy.
mesh_terms: D000653:Amniotic Fluid / Q000032:analysis* / Q000166:cytology; D001806:Blood Urea Nitrogen; D003404:Creatinine / Q000032:analysis / Q000097:blood*; D004899:Erythroblastosis, Fetal / Q000097:blood; D005260:Female; D005865:Gestational Age; D006801:Humans; D009994:Osmolar Concentration; D011247:Pregnancy; D012964:Sodium / Q000032:analysis / Q000097:blood*; D014508:Urea / Q000032:analysis
chemical_list: D014508:Urea; D012964:Sodium; D003404:Creatinine