the capacity of three prostanoids ( pge1 , 6-beta-pgi1 , pgi2 or prostacyclin ) and a phosphodiesterase inhibitor ( rolipram ) to inhibit nk ( `` '' natural killer '' '' ) cell cytotoxicity and to raise cyclic amp levels in purified nk cells was compared .
C0033554
prostanoids
C0002335
pge1