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Casp-8 and TIMP-1 were detected by immunofluorescence staining. Diffuse positive staining for Casp-8 and TIMP-1 were found in the control group, whereas localized or minimal staining was observed in other groups. Scale bar 100 μm.
Abbreviations: Casp, caspase; TIMP, tissue inhibitor of metalloproteinases; DAPI, 4′,6-diamidino-2-phenylindole; MSC, mesenchymal stem cell; SAP, self-assembled peptide.
