Figure 1From: Houttuynia cordata Thunb extract modulates G0/G1 arrest and Fas/CD95-mediated death receptor apoptotic cell death in human lung cancer A549 cellsEffects of HCT on cell viability and morphological changes in human lung cancer A549 cells. (A) The A549 cells were treated with HCT (0, 125, 250 and 500 μg/ml) for 24 and 48 h, the viable cells were determined by MTT assay as described in Materials and Methods. The experiments were performed in triplicate (n = 3). ***p < 0.001 was considered significantly different in comparison with the control. (B) The cells’ morphological changes were examined and photographed by phase-contrast microscopy.Back to article page