Each group was further divided into four subgroups. All rats were killed at4,24,72,120 hours after injury, pathological changes and water, Evans Blue content of brain tissue in injured areas were examined.

• 每组又按处死时间4 h,24 h,72 h,120 h分成四个亚组,每亚组取5 只行水含量与光镜、电镜检查,另5只检测伊文思兰含量。