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Figure 6 Connexin (Cx)43-positive gap junctions along a region of intimate cell-cell contact between a DsRed-labeled human mesenchymal stem cell (hMSC) and a cardiomyocyte (A, white arrowhead). Cx43 is also present in the cytoplasm of the DsRed-labeled hMSC (A, black arrowhead, B, black arrowhead), between adjacent cardiomyocytes (A, white arrowhead) and between adjacent hMSC (B, white arrowhead).
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