title: Development of tolerance in pigeons to behavioral effects of a new benzopyran derivative.
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000187:drug effects*; D001578:Benzopyrans / Q000494:pharmacology*; D010856:Columbidae; D003216:Conditioning, Operant / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004361:Drug Tolerance; D008297:Male; D011725:Pyridines / Q000494:pharmacology
chemical_list: D001578:Benzopyrans; D011725:Pyridines