Objective To explore the effect of the self-assembled peptide nanofiber scaffold(NFS) and marrow-derived cardiac stem cells(MCSC) transplantation on cardiac function after myocardial infarction(MI),and provide theoretical and experimental basis for new nano-material in clinical stem cell transplantation.Methods The MCSC were isolated from marrow mesenchymal stem cells with single-cell cloning culture,and identified by c-kit immunoflourence staining and Nkx 2.5 expression analysis.The self-assembled peptides...