title: Effects on humans of   9 -tetrahydrocannabinol administered by smoking.
abstract: Twelve chronic marijuana users received triangle up(9)-tetrahydrocannabinol by smoking. The magnitude of their pulse increment was highly correlated with their subjective experiences. Three of the 12 subjects subsequently received triangle up(9)-tetrahydrocannabinol labeled with carbon-14; the time course of its concentration in plasma was highly correlated with the pulse increment. Subjective symptoms, however, appeared later and dissipated more slowly.
mesh_terms: D000328:Adult; D001345:Autoradiography; D002188:Cannabis / Q000008:administration & dosage*; D002247:Carbon Isotopes; D002986:Clinical Trials as Topic; D013759:Dronabinol / Q000008:administration & dosage / Q000097:blood / Q000494:pharmacology / Q000652:urine; D004644:Emotions / Q000187:drug effects; D006801:Humans; D008297:Male; D008517:Phytotherapy; D010919:Placebos; D011674:Pulse / Q000187:drug effects
chemical_list: D002247:Carbon Isotopes; D010919:Placebos; D013759:Dronabinol