Figure 3: Effects of the hyperbaric hydrogen (H2) gas treatment on the red blood cell counts (RBC, A), hemoglobin levels (HGB, B), and the hematocrit (HT, C) of patients in control and H2 groups Note: Blood samples were obtained from all patients on the first day of intensity-modulated radiation therapy (IMRT) (before treatment) and after 1 to 4 weeks of IMRT (after treatment). (A–C) RBC (A), HGB (B), and HT (C) were expressed as ratios of after to before the treatment. NS: not significant. Data are given as the means ± SEM (n = 7 in control group, and n = 16 in H2 group), and were analyzed by Mann-Whitney U test. NS: Not significant.