Figure 3. Interaction between TGF-β and SPARC. A: Co-immunoprecipitation assay between TGF-β and SPARC that is immunoprecipitated (IP) with anti-TGF-β and immunoblotted (IB) with anti-SPARC. B: Immunoblotting (IB) with anti-TGF-β for immunoprecipitated (IP) with anti-SPARC that confirms their physical interaction.