[Response of the excised guinea pig tracheal muscle to morphine and meperidine].
D006168:Guinea Pigs; D008614:Meperidine; D009020:Morphine / Q000494:pharmacology*; D009132:Muscles; D014132:Trachea / Q000502:physiology*
D009020:Morphine; D008614:Meperidine
MORPHINE/effects; TRACHEA/physiology