Major forms of oxidatively modified residues that were identified in OxPLs. The figure presents example structures from all groups of PUFA oxidation products that were shown to exist in PL-esterified form. R is 1-acyl-2-lyso-sn-glycero-3-X; X, phosphocholine, phosphoserine, phosphoethanolamine, phosphoinositol, phosphoglycerol, phosphate; R' is an alkyl residiue.