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Representative SPECT images of sham (A), control (B), Cells/hydrogel (C), and Cells/hydrogel/IGF-1 (D) groups 8 weeks after surgery. (E) Defect size of myocardium (%) in different groups (n=6, mean ± SD). **P < 0.01 vs. control, ##P < 0.01 vs. Cells/hydrogel
