title: Evidence for a stereospecific [3H]etorphine binding in human placenta.
mesh_terms: D002462:Cell Membrane; D005048:Etorphine / Q000378:metabolism*; D005260:Female; D006801:Humans; D007700:Kinetics; D009019:Morphinans / Q000378:metabolism*; D010920:Placenta / Q000378:metabolism*; D011247:Pregnancy; D011957:Receptors, Opioid / Q000378:metabolism*; D013329:Structure-Activity Relationship; D013379:Substrate Specificity
chemical_list: D009019:Morphinans; D011957:Receptors, Opioid; D005048:Etorphine