Figure 2.

Expression of occludin positive cells in brain tissue after traumatic brain injury (immunohistochemical staining, × 400).

The brown granules (arrows) indicate occludin positive expression.

(A) Sham-surgery group: Occludin was abundantly expressed. (B) 2 hour trauma group: Occludin was abundantly expressed and the expression level was not decreased. (C) 6 hour trauma group: Occludin expression was significantly decreased.

(D) 24 hour trauma group: Occludin was still lowly expressed. (E) 3 day trauma group: Occludin expression was the minimal. (F) 5 day trauma group: Occludin was lowly expressed.