title: Comparison of binding of [3H]-methionine-enkephalin, [3H]-naltrexone and [3H]-dihydromorphine in the mouse vas deferens and the myenteric plexus and brain of the ginea pig.
abstract: [3H]-Methionine-enkephalin, [3H]-naltrexone and [3H]-dihydromorphine are specifically bound in homogenates of not only the brain and myenteric plexus of the guinea pig but also the vas deferens of the mouse. Brain has a ratio of methionine-enkephalin to dihydromorphine binding in favour of methionine-enkephalin binding and the myenteric plexus a ratio in favour of dihydromorphine binding, with the mouse vas deferens being intermediate.
mesh_terms: D000818:Animals; D001921:Brain / Q000378:metabolism*; D004090:Dihydromorphine / Q000378:metabolism*; D004723:Endorphins / Q000378:metabolism*; D004745:Enkephalins / Q000378:metabolism*; D006168:Guinea Pigs; D066298:In Vitro Techniques; D008297:Male; D051379:Mice; D009022:Morphine Derivatives / Q000378:metabolism*; D009197:Myenteric Plexus / Q000378:metabolism*; D009270:Naloxone / Q000031:analogs & derivatives*; D009271:Naltrexone / Q000378:metabolism*; D009928:Organ Specificity; D013237:Stereoisomerism; D014649:Vas Deferens / Q000378:metabolism*
chemical_list: D004723:Endorphins; D004745:Enkephalins; D009022:Morphine Derivatives; D009270:Naloxone; D009271:Naltrexone; D004090:Dihydromorphine