Detection of CPSC markers by RT-PCR. A, the image shows the expression levels of CD44, CD73, CD90, Vimentin, Notch1, and GAPDH. B, detection of CPSC markers by flow cytometry. CPSCs were labelled by the markers CD29, CD90, CD105, and CD106. The positivity rates of the CPSCs for all these markers were above 99%.