Effects of a low and a high dose of beta-endorphin on acquisition and retention in the rat.
D000818:Animals; D001362:Avoidance Learning / Q000187:drug effects; D004305:Dose-Response Relationship, Drug; D004723:Endorphins / Q000494:pharmacology*; D005260:Female; D006185:Habituation, Psychophysiologic / Q000187:drug effects; D007858:Learning / Q000187:drug effects*; D008568:Memory / Q000187:drug effects*; D009270:Naloxone / Q000494:pharmacology; D051381:Rats; D012153:Retention, Psychology / Q000187:drug effects*
D004723:Endorphins; D009270:Naloxone