Statistically significant associations between erythrocyte and optic nerve individual ethanolamine-phospholipid concentrations evaluated by liquid chromatography coupled with tandem mass spectrometry.

a: [M+H]+ for PE species and MS/MS transition for PlsE species. b: PE species are expressed as µg of mg of total phospholipids whereas PlsE species are expressed as ratio to the internal standard PE14:0/14:0. c: Abbreviations of individual PE and PlsE species are as follows: position on the glycerol backbone as shown as sn-1/sn-2 of the fatty acid and fatty alcohol radicals (abbreviated as number of carbons: number of double bonds).