the level of endogenous prostacyclin ( pgi2 ) , prostaglandin e2 ( pge2 ) and thromboxane a2 ( txa2 ) in rat gastric mucosa was determined by radioimmunoassay to examine whether gefarnate , an antiulcer agent , maintained the endogenous prostaglandin ( pg ) level in rats subjected to water-immersion stress .
C0012472
prostaglandin e2
C0033554
prostaglandin