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Slug expression promotes HCC cell proliferation. The HepG2 cells were transfected with Slug and Snail expression plasmids and small interfering RNA plasmids. (A) Western blot analysis and (B) the SRB protein assay analyzed the correlation of invasion-related protein levels with HepG2 cell proliferation. HCC, hepatocellular carcinoma; C, control; SRB, sulforhodamine B; si, small interfering (gene knockdown).
