Fig. 1From: Oxidative DNA damage is involved in cigarette smoke-induced lung injury in ratsPhotomicrographs of the lung tissues of the control rats (a, b) and those exposed to cigarette smoke (c–f). The tissue sections were stained with hematoxylin and eosin (H&E). a, c, e: magnification ×100; b, d f: magnification ×400Back to article page