the antinociceptive effects of o-methylflavinantine ( omf ) , a morphinandienone alkaloid , were investigated in the mouse hot plate and abdominal constriction tests ( nociceptive agents : 5-hydroxytryptamine , acetylcholine , bradykinin , prostaglandin , e ( 1 ) ( pge ( 1 ) , formic acid and phenylquinone ) .
C0033554
prostaglandin
C0033559
pge