title: The earliest demonstration of the placental passage of morphine?
authors.forename: D B
authors.initials: DB
authors.lastname: Jack
authors.forename: S J
authors.initials: SJ
authors.lastname: Laugher
mesh_terms: D004626:Embryology / Q000266:history*; D049711:History, Modern 1601-; D009020:Morphine / Q000266:history*; D009774:Obstetrics / Q000266:history*
chemical_list: D009020:Morphine