The expression of Ikk and p65 proteins in the lungs of mice exposed to simulated hypobaric hypoxia at an altitude of 7000 m for 6 h. (a) Western blot analysis of Ikk and p65; (b) and (c) are Ikk and p65 relative expression. Con, control; H, hypoxia+H EEPO; hyp, hypoxia; L, hypoxia+L EEPO; M, hypoxia+M EEPO; #p<0.05 compared with control group, &p<0.05 compared with hypoxia group, *p<0.01 compared with control group, and ★p<0.01 compared with hypoxia group.