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Figure 2 Multi-detector computed tomography scan of the same mesenchymal stem cell (MSC)-treated animal at 5 days (A), 4 weeks (B), and 8 weeks (C) after MSC injection. There is a time-dependent reduction in the thickness of the infarct scar and a corresponding increase in the thickness of the sub-endocardial rim of tissue over the 8-week follow-up.