with time there was a shift in label among phospholipids , with higher proportions of choline appearing in sphingomyelin , glycerol in phosphatidylserine , ethanolamine in phosphatidylethanolamine ( plasmalogen ) , and inositol in polyphosphoinositides , especially phosphatidylinositol 4,5-bisphosphate .
C0071655
polyphosphoinositides
C0031621
phosphatidylinositol