Figure 2: Comparison of chromatograms obtained upon analysis of 8-oxo-dG and 8-oxo-dA by the two LC-MS/MS methods tested in this study.

The same mtDNA sample from human retina was analyzed by using (a) LC-ESI-MS/MS and (b) LC-NSI-MS/MS.

The same mtDNA sample from human retina was analyzed by using (a) LC-ESI-MS/MS and (b) LC-NSI-MS/MS.