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The Expression of VEGF (immunohistochemistry staining. 400 x (A1): Model group 1 day; (A2): HCC group 1 day; (B1): Model group 3 days; (B2): HCC group 3 days; (C1): Model group 5 days; (C2): HCC group 5 days; (D1): Model group 7 days; (D2): HCC group 7 days. (E): Sham operation group; The arrow points to positive expression).
