Radiosensitization by tunicamycin in vivo. A: Tumor xenografts removed from each group were subjected to Western blotting analysis for GRP78, GRP94, LC3, and ATG5; B: Examples of tumor xenografts removed from each group; C: Growth curves of tumor xenografts; D: Samples of tumor xenografts were subjected to Western blotting analysis for Akt, p-Akt, and PI3K. N: Sham-treated with tunicamycin (TM); R: 10 Gy irradiation; GAPDH: Glyceraldehyde-3-phosphate dehydrogenase.