title: Human placental cholinergic system. Occurrence, distribution and variation with gestational age of acetylcholine in human placenta.
mesh_terms: D000109:Acetylcholine / Q000032:analysis / Q000378:metabolism*; D002824:Chorionic Villi / Q000378:metabolism; D002849:Chromatography, Gas; D002852:Chromatography, Ion Exchange; D005260:Female; D005865:Gestational Age; D006801:Humans; D008566:Membranes / Q000378:metabolism; D010920:Placenta / Q000378:metabolism* / Q000502:physiology / Q000648:ultrastructure; D011247:Pregnancy; D011261:Pregnancy Trimester, First; D011262:Pregnancy Trimester, Second; D011263:Pregnancy Trimester, Third; D000644:Quaternary Ammonium Compounds / Q000378:metabolism
chemical_list: D000644:Quaternary Ammonium Compounds; D000109:Acetylcholine