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Immunohistochemical analysis of Hsp-70 protein. HSP-70 expression in the gastric tissue of rats submitted to ethanol-induced gastric mucosal lesions at different groups where (A) normal control group, (B) ulcer control group (B), (C) omeprazole group, (D, E, F) the pre-treated groups with DES at doses 5, 10 and 20 mg/kg, respectively. The antigen site appears as a brown color (IHC: 20×).
