Fig. 3From: Autophagy contributes to the chemo-resistance of non-small cell lung cancer in hypoxic conditionsHypoxia enhances cancer cell chemoresistance. A549 cells were treated with indicated concentrations of cisplatin with normoxia or 1 % hypoxia for 8 h. Cell death was measured by MTT assays. Percent cell death is shown as mean ± SEM of at least 3 independent determinations, *p < 0.05Back to article page