title: Intestinal contractions: excitatory actions of opioids.
authors.affiliation: Department of Pharmacology, College of Medicine, University of Arizona, Tucson 85724.
authors.forename: T F
authors.initials: TF
authors.lastname: Burks
authors.forename: L D
authors.initials: LD
authors.lastname: Hirning
authors.forename: T H
authors.initials: TH
authors.lastname: Kramer
mesh_terms: D000818:Animals; D007422:Intestines / Q000187:drug effects*; D009119:Muscle Contraction / Q000187:drug effects; D009130:Muscle, Smooth / Q000187:drug effects*; D009294:Narcotics / Q000494:pharmacology*
chemical_list: D009294:Narcotics