Effect of TβRI antagonism on myocardial fibrillar collagen content in littermate control and MHCsTNF mice. Panel A: Representative picrosirius red staining of myocardial samples from diluent treated littermate control, NP-40208 treated littermate control, diluent treated MHCsTNF, and NP-40208 treated MHCsTNF mice. Panel B: Results of group data for fibrillar collagen content (expressed as percentage of myocardial area) in diluent treated littermate control (n=5), NP-40208 treated littermate control (n=5), diluent treated MHCsTNF (n=8) mice, and NP-40208 treated MHCsTNF (n=7) mice. (Key * p < 0.05 vs. diluent and NP-40208 treated littermate controls, † p < 0.05 vs. diluent treated MHCsTNF mice).