title: Tolerance to opiate-like material released in the myenteric plexus from dependent guinea-pig.
mesh_terms: D000818:Animals; D004361:Drug Tolerance; D004558:Electric Stimulation; D004723:Endorphins / Q000502:physiology*; D006168:Guinea Pigs; D006801:Humans; D007082:Ileum / Q000187:drug effects; D066298:In Vitro Techniques; D008297:Male; D009021:Morphine Dependence / Q000503:physiopathology*; D009119:Muscle Contraction / Q000187:drug effects; D009197:Myenteric Plexus / Q000503:physiopathology*; D009270:Naloxone / Q000494:pharmacology
chemical_list: D004723:Endorphins; D009270:Naloxone