Fig. 1From: Metformin induces ferroptosis through the Nrf2/HO-1 signaling in lung cancerEffects of metformin on survival of A549 and H1299 lung cancer cells. The cell survival rate was detected by CCK-8 assay after 48 h of treatment with different concentrations of metformin in A549 cells (A) or H1299 cells (B), n = 3, *P < 0.05 compared with the control groupBack to article page