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DDR2 S131C mutation promotes lung SCC cells growth in vivo. (A) Tumor growth curve. H1703 cells were stablely transfected with pEGFP-DDR2, pEGFP-DDR2-S131C or empty vector and then injected into nude mice. The error bars represent the standard deviation (S.D). (B) The tumor weight was represented as means of tumor weights ± s.d. (C) Representative images (×200) of HE staining and immunohistochemistry of the proliferation index Ki67.
