title: Doors of perception.
authors.forename: R
authors.initials: R
authors.lastname: Gregory
mesh_terms: D003243:Consciousness / Q000187:drug effects*; D006213:Hallucinogens / Q000494:pharmacology*; D006801:Humans; D008635:Mescaline / Q000494:pharmacology*; D010465:Perception / Q000187:drug effects*
chemical_list: D006213:Hallucinogens; D008635:Mescaline