Fig. 1From: Measurement of 8-hydroxyguanine as an oxidative stress biomarker in saliva by HPLC-ECDa HPLC-1 chromatograms of the 8-OHGua standard and a human saliva sample. b HPLC-2 chromatogram of the 8-OHGua fraction of human saliva obtained by HPLC-1Back to article page