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Effects of andrographolide on cigarette smoke-induced BAL fluid oxidative damage marker levels. 8-Isoprostane, 8-OHdG and 3-NT levels were measured using elisa. Lower limits of detection were as follows: 8-isoprostane at 2.7 pg·mL−1; 8-OHdG at 33 pg·mL−1; and 3-NT at 0.1 μM. Values are means ± SEM for six mice per group. *Significant difference from DMSO, P < 0.05.
