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(a) Negative control for staining IgG in MSCs. The negative control for detecting cTnT expression in MSCs after induction for two weeks. Scale bar = 50 μm. (b) Identification of cardiomyocytes. Purified cardiomyocytes derived from new-born rats' heart tissue were identified by immunoflourescence assay. Immunofluorescence staining of cTnT in cardiomyocytes was positive. Scale bar = 10 μm.
