Actions of morphine and sympathomimetic amines on isolated chick oesophagus.
D000818:Animals; D002645:Chickens; D004947:Esophagus / Q000187:drug effects* / Q000294:innervation; D009020:Morphine / Q000494:pharmacology*; D009119:Muscle Contraction / Q000187:drug effects; D013268:Stimulation, Chemical; D013566:Sympathomimetics / Q000037:antagonists & inhibitors / Q000494:pharmacology*
D013566:Sympathomimetics; D009020:Morphine