Fig. 2
From: Plasmalogen lipids: functional mechanism and their involvement in gastrointestinal cancer
Structure of plasmalogen. R1: saturated fatty acid (SFA), monounsaturated fatty acid (MUFA); R2: polyunsaturated fatty acid (PUFA); sn-1, sn-2 and sn-3 glycerol position; X: choline or ethanolamine as polar head group