Fig. 1From: Pretreatment of nucleus pulposus mesenchymal stem cells with appropriate concentration of H2O2 enhances their ability to treat intervertebral disc degenerationIdentification of NPMSCs. a Representative image illustrating the morphology of NPMSCs. Scale bar = 200 μm. b Alizarin Red staining, Alcian Blue staining, and Oil Red O staining results of NPMSCs at 21 days post-induction. Scale bar = 50 μm. c Flow cytometry examining the expression of CD34, CD45, CD73, CD90, and CD105 on NPMSCsBack to article page