Fig. 1

Representative staining intensity scores for CD133 at ×200. a Case 19, pre-treatment biopsy, score 1; b case 19, post-treatment resection, score 0; c case 10, pre-treatment biopsy, score 3; d case 10, post-treatment resection area with retained spindle cells, score 1; e case 10, post treatment resection area with more epithelioid and multinucleate tumor cells, score 0. Higher magnification inserts are shown in the bottom right of each panel