Fig 1: Classification of medulloblastoma. A Classification of different intensity scores (0, 1, 2, 3) for B7-H3. Score 2 and score 3 defined as high expression of B7-H3 (n = 13, outside red line), score 0 and score 1 defined as low expression of B7-H3 (n = 11, outside blue line). B Classification of B7-H3 positive staining in tumor cells. Grade ++ and grade +++ defined as high expression of B7-H3 (n = 13, outside red line), grade ± and grade + defined as low expression of B7-H3 (n = 11, outside blue line)