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Immunohistochemical analysis of expression of apoptotic factors in mouse xenograft tumors. HepG2 cells stably expressing HBx were inoculated subcutaneously into the dorsal flanks of nude mince. Two weeks later, the established tumors were subjected to intratumor injection with vectors as indicated on the top. Tumors were sectioned and immunohistochemical examination was carried out with antibodies as indicated to the left.
