title: Brain concentration of methadone after administration of 14C labelled dl-methadone to pregnant rats by different routes.
mesh_terms: D000284:Administration, Oral; D000818:Animals; D001921:Brain / Q000378:metabolism*; D004386:Duodenum; D005260:Female; D005333:Fetus / Q000378:metabolism*; D007267:Injections; D007274:Injections, Intraperitoneal; D007275:Injections, Intravenous; D007279:Injections, Subcutaneous; D008431:Maternal-Fetal Exchange; D008691:Methadone / Q000008:administration & dosage / Q000378:metabolism*; D011247:Pregnancy; D011270:Pregnancy, Animal; D051381:Rats; D014599:Uterus
chemical_list: D008691:Methadone