Bax and Bcl-2 expression using Western blot analysis.

<p>The figure showed that the hypoxia-preconditioning group had the higher expression of Bax than that in conventional oxygen group,the different was significant,but the different between the hypoxia-preconditioning group and hypoxia group or between the conventional oxygen group and hypoxia group were not significant.While the hypoxia-preconditioning group had the highst expression of Bcl-2, and the hypoxia group had the lowest expression of Bcl-2, the different among the three group were significant. Due to the ratio of Bcl-2/bax, the hypoxia-preconditioning group had the highst expression of Bcl-2/bax, and the hypoxia group had the lowest expression of Bcl-2/bax, the different among the three group were significant.