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Figure 4 Picrosirius red-stained sections of control (A,B) and treated (C,D) hearts. Muscle cells appear yellow, scar tissue appears red. (A and C) Original magnification x40. (B and D) Higher magnification x200 of the area indicated by rectangle in panels A and C, respectively. The morphology in the two groups is similar without evidence of newly formed muscle in the treated hearts.
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