Fig. 3From: Enhancement of radiation therapy by indoleamine 2,3 dioxygenase 1 inhibition through multimodal mechanismsClonogenic assay of colorectal cancer cells after exposure to various doses of radiation with or without 1-MT. HCT116 (upper left panel), HT-29 (upper right panel), and Colon26 (lower left panel). Bars indicate standard deviations. * p < 0.05 in comparison between cells treated with and without 1-MT (500 µM)Back to article page