Fig. 5From: Chloroquine, an autophagy inhibitor, potentiates the radiosensitivity of glioma initiating cells by inhibiting autophagy and activating apoptosisCombination treatment of irradiation and chloroquine have synergistically effects on decreasing the GICs’ tumorsphere numbers and diameters. a-d U87 GICs were treated as described before, then seeded in serum-free medium to generate tumorspheres,5 days after treatment, we counted and photographed total tumorspheres (a control group, b chloroquine group, c radiation group, d conbination group). e Quantitative analysis of the relative tumorsphere numbers treated by indicated treatments. f Quantitative analysis of the diameter of the tumorspheres treated by indicated treatments. (*, p < 0.05, **p < 0.01)Back to article page