Figure 3

ALA potentiates B16-BL6 tumor suppression by X-ray irradiation. C57Bl/6 mice bearing B16-BL6 cells were as follows: (1) control; (2) ALA; (3); irradiation, 10 locally fractionated doses of 3 Gy each; (4) irradiation after ALA treatment, 10 locally fractionated doses of 3 Gy each. Data are given as means ± SD (n = 5, *P < 0.05 vs. control, **P < 0.01 vs. control). Tumor size (A) was measured daily and body weight (B) was measured 3 times a week; curves were plotted up to day 12.