the rank order of spontaneous release of prostanoids ( measured by radioimmunoassay ) from the perfused rat lung was 6-oxo-pgf1 alpha greater than thromboxane b2 ( txb2 ) greater than pge2 greater than 6-oxo-pge1 ( measured biologically ) greater than pgf2 alpha .
C0033554
prostanoids
C0002335
pge1