Figure 4. CTGF/CCN2 protein expression in primary gingival epithelial and fibroblast cultures determined by Western blotting.
Western blots of cell layer extracts of primary human gingival epithelial cells (A) and human gingival fibroblasts (B) cultured and treated as described in “Methods and Materials” with 5 ng/ml TGF-β1, 10 μM LPA, or no treatment control. Blots analyzed with non-immune IgG gave no background signal. β-actin antibody was used to verify equal loading of gels. Blots are representative of four experiments with consistent results.