Vaught, J L <br/><br/>
Differential effects of leucine and methionine enkephalin on morphine-induced analgesia, acute tolerance and dependence.  [electronic resource] 

 -  The Journal of pharmacology and experimental therapeutics  Jan 1979 
 - 86-90 p.  digital 
<br/><br/> Publication Type: Comparative Study; Journal Article; Research Support, U.S. Gov't, P.H.S. 
<br/><br/><label>ISSN: </label>0022-3565 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Analgesia<br/>Animals<br/>Brain--drug effects<br/>Drug Synergism<br/>Drug Tolerance<br/>Endorphins--pharmacology<br/>Enkephalins--pharmacology<br/>Humans<br/>Male<br/>Mice<br/>Morphine--metabolism<br/>Morphine Dependence--etiology<br/>Reaction Time--drug effects