No abstract available
Publication types
-
Research Support, U.S. Gov't, P.H.S.
MeSH terms
-
Animals
-
Brain Stem / drug effects*
-
Brain Stem / physiology
-
Dose-Response Relationship, Drug
-
Male
-
Mice
-
Morphine / pharmacology*
-
Reinforcement, Psychology
-
Self Stimulation / drug effects*
-
Self Stimulation / physiology