The expression pattern of mesenchymal and epithelial markers in both groups. (A) Western blotting assay showed significantly higher expression of CD44 and Vimentin, and lower expression of Sox1 and E-cadherin in GBM cells from higher scored group than lower scored group. α-tubulin was used as internal reference. (B) Bar charts showed the relative expression of these markers to α-tubulin and revealed the statistically different expression of these markers between two groups.