three prostaglandins , pge2 , pgf2 alpha and pgi2 ( measured as 6-keto-pgf1 alpha ) , serologically active 6-sulphidopeptide-containing leukotrienes and hydroxyeicosatetraenoic acids were determined by radioimmunoassay of mixed saliva obtained at several flow rates from 8 healthy volunteers .
C0033554
prostaglandins
C0012472
pge2