Fig. 1

NKG2DL expression in glioblastoma cell lines and patient tumors. a Expression of NKG2D ligands for U-251MG, T98G, U-87MG, HTB185 cells. Percentage of positive cells is detailed in the histograms. b, c The major NKG2D ligand MICA and ULBP2 staining in a tissue microarray containing 60 glioblastoma tissues and 10 normal tissues. For each antibody, evaluate semiquantitatively the immunostaining, as follows: - (absence of staining), 1+ (mild staining), 2+ (moderate staining), 3+ (severe staining), scale bar = 300 μm