title: Comparison of graded single intramuscular doses of morphine and pentobarbital in man.
mesh_terms: D001519:Behavior / Q000187:drug effects; D002986:Clinical Trials as Topic; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D005059:Euphoria / Q000187:drug effects; D005133:Eye Movements / Q000187:drug effects; D006801:Humans; D007273:Injections, Intramuscular; D009020:Morphine / Q000008:administration & dosage / Q000494:pharmacology*; D010424:Pentobarbital / Q000008:administration & dosage / Q000494:pharmacology*; D010919:Placebos; D011680:Pupil / Q000187:drug effects; D011795:Surveys and Questionnaires; D013997:Time Factors
chemical_list: D010919:Placebos; D009020:Morphine; D010424:Pentobarbital