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A. The expression level of Smad3 was determined in 63 pairs of human GC tissues and adjacent normal tissues by qRT-PCR. B. The expression level of Smad3 in GC cells and GES-1. C. Smad3 protein level was examined by western blotting in six paired of GC tissues. D. Smad3 protein level in GC specimens and adjacent normal tissues was determined by immunohistochemistry staining.
