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Photomicrograph immunohistochemistry of gastric mucosal expression of COX-2. (A–D): Control mice. (E–H): Indomethacin-induced ulcer (IND). (I-L): EGb 761 +IND (Prophylactic EGb 761). (M–P): IND+EGb 761 (Therapeutic EGb 761). Negative marker control is shown in the inset of Figure 5A. IND: Indomethacin; EGb 761: Standardized G. biloba extract; COX-2: Cyclooxygenase-2.
