MS analysis of Tr-OxPLs species in young and aged mice. A) MS determination of the indicated Tr-OxPLs in the lung and aorta tissues of mice was performed; n = 3, *P < 0.05. B, C) Mice were challenged with LPS (0.75 mg/kg, i.t., 6 h) followed by analysis of Tr-OxPLs by MS; n = 3. *P < 0.05. D) Change in the levels of Tr-OxPLs in mice lungs after 2 and 5 d of LPS exposure (0.75 mg/kg, i.t.) was determined; n = 3. *P < 0.05.