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Endothelial and smooth muscle cell infiltration into the myocardial matrix gel, within the rat myocardium. (A-C) 4 hr post-injection. Note the lack of cells within the matrix. (D-F) 11 days post-injection. (A,D) Merged images showing endothelial cells (green) and smooth muscle cells (red). Area of myocardial matrix is denoted by arrows and is surrounded by the dotted line. (B, E) arterioles only. (C, F) endothelial cells only. Scale bars are 100 μm.
