Figure 3: Hydrogen gas had no effect on subarachnoid hemorrhage (SAH) grade and neurological function 72 hours after SAH. Note: (A) SAH grade. SAH grade quantification was carried out and showed no significant difference between SAH + air and SAH + hydrogen groups; however, both were significant compared to the sham group. (B) Neurological test. Right-forelimb placement scores were restored to sham levels, showing no significant difference between groups (P > 0.05). Data represent the mean ± SD (n = 6 in sham group, 4 in SAH + air group, and 8 in SAH + hydrogen group). *P < 0.05, vs. sham group (one-way analysis of variance followed by post-hoc Tukey’s test).