Placenta transfer of  14 C-parathion administered intravenously to sheep.
D000653:Amniotic Fluid / Q000032:analysis; D000818:Animals; D002247:Carbon Isotopes; D002802:Cholinesterases / Q000097:blood; D002855:Chromatography, Thin Layer; D005260:Female; D005865:Gestational Age; D006207:Half-Life; D007275:Injections, Intravenous; D008431:Maternal-Fetal Exchange; D010278:Parathion / Q000008:administration & dosage / Q000032:analysis / Q000097:blood*; D011247:Pregnancy; D012756:Sheep; D013997:Time Factors
D002247:Carbon Isotopes; D010278:Parathion; D002802:Cholinesterases