Figure 3From: Age-dependent defective TGF-beta1 signaling in patients undergoing coronary artery bypass grafting Effect of age on Smad2 and Smad3 phosphorylation. Top dot blots show the expression of Smad2 and Smad3 as well as their phosphorylated forms. Bottom bars show quantifications among different age groups. No significant differences were found.Back to article page