Figure 6From: BMP2 gene delivery to bone mesenchymal stem cell by chitosan-g-PEI nonviral vectorBMP2 expression was examined by ELISA and Western blot assay. The expressed BMP2 protein was quantified by ELISA analysis (A), and the activation of its downstream Smad1/5/8 signaling pathway was studied through Western blot assay (B).Back to article page