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Time course expression of tissue Toll-like receptor 4 (TLR-4) (Western blot). *P < 0.01: precondition with glycyrrhizin (24, 48, and 72 hr, resp.) groups, and **: P < 0.01, treatment with glycyrrhizin (24 hr) compared with the SAH groups. #: P > 0.05 compared with the SAH group. All groups are equal to those publicized in Figure 3.
