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Smad4 gene and protein expression in human gingival fibroblasts following transfection with Lv-Smad4. Relative expression of Smad4 (A) mRNA and (B) protein following transfection with Lv-Smad4, Lv-control or blank control treatment. One-way ANOVA followed by Dunnett's post hoc test was used to analyze data. *P<0.05 vs. Control. Lv-, lentivirus.
