Figure 5: Cortical neuronal cell loss (A) and microglial activation (B) of the SAH rats with argon or N2 treatment. Note: Cytomorphological quantification of neuronal damage (A) and microglial activation (B) at 6, 24 and 72 hours after SAH. 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.