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Representative photomicrographs of Masson Trichrome staining for fibrosis in left ventricular myocardium of wild-type (WT), catalase (CAT), Gαq and Gαq/CAT mice at 20 weeks lf age. Increased myocardial fibrosis was present in Gαq mice, and was inhibited in Gαq/CAT mice. Myocardium stains red, and collagen stains blue. The bar in the left upper panel indicates 50 μm.
