Figure 6: Microglial activation of the corpus callosum 6, 24 and 72 hours after SAH. Note: Microglial activation was expressed as number of activated microglia in 400-fold field. Data are expressed as mean ± SD. *P < 0.05 (repeated measures analysis of variance). Ar: Argon; MG: microglia; SAH: subarachnoid hemorrhage.