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Figure 4 Myoblast survival and location within myocardium after five weeks (x100). (A and B) Anti-skeletal, fast myosin heavy chain-labeled myoblasts visualized with a Cy3 secondary antibody. (C and D) Hematoxylin and eosin-stained sections that neighbor (A) and (B), respectively. (C and D) Normal and infarcted myocardium are labeled to visualize the location of transplanted cells. (A) Transplanted skeletal myoblasts in bovine serum albumin are located at the border of the infarct scar. (B) In contrast, a greater number of skeletal myoblasts injected in fibrin glue are located both at the border and within the infarct scar. Surviving myoblasts are in clumps surrounding arterioles (arrows in B and D) in the scar.
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