Figure 1.

Frequency of CD133⁺ and CD24⁺ tumor cells in bladder cancer. (A) Both CD133⁺ and CD24⁺ tumor cells were absent in low grade urothelial carcinoma, and (B) CD133⁺ and (C) CD24⁺ tumor cells were more frequent in non-papillary high grade urothelial carcinoma. (D) In non-urothelial bladder cancer, both CD133⁺ and CD24⁺ tumor cells were absent in well-differentiated squamous cell carcinomas. (E) CD133⁺ and (F) CD24⁺ tumor cells were more frequent as tumors grew less differentiated. (IHC, A, B, and D; ×200, C and E; ×400, F; ×100).