title: Membrane carriers and receptors at maternal and fetal sides of the placenta by single circulation paired-tracer dilution: evidence for a choline transport system.
mesh_terms: D000818:Animals; D001692:Biological Transport; D002794:Choline / Q000378:metabolism*; D005260:Female; D006168:Guinea Pigs; D066298:In Vitro Techniques; D007201:Indicator Dilution Techniques; D008431:Maternal-Fetal Exchange; D008566:Membranes / Q000378:metabolism; D010477:Perfusion; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D014327:Trophoblasts / Q000378:metabolism
chemical_list: D002794:Choline