Quantitative RT-PCR expression profiles of Hspcb, Hsp86-1, Nfe2l2, Ace, and Mip-2. The lines represent log₂-transformed gene expression ratios between SAD mice exposed to different hypoxia times (4, 10, and 46 hours) plus 2 hours of reoxygenation alone (black diamond) or with NO 40 ppm (white square) (n = 6 for each condition); wild-type mice exposed to hypoxia/reoxygenation alone (white triangle) (n = 6) compared with an untreated SAD mouse normoxic group (time 0, n = 6).