Susceptibility to morphine-induced analgesia in mice.
D000698:Analgesia; D000818:Animals; D002940:Circadian Rhythm; D003624:Darkness; D004777:Environment; D005260:Female; D006993:Hypnotics and Sedatives / Q000494:pharmacology; D008027:Light; D051379:Mice; D009020:Morphine / Q000494:pharmacology*
D006993:Hypnotics and Sedatives; D009020:Morphine