Fig. 4From: Human U87 glioblastoma cells with stemness features display enhanced sensitivity to natural killer cell cytotoxicity through altered expression of NKG2D ligandExpression of NKG2D ligands in serum U87 and NBE U87 GBM cells by RT-PCR. Increased expression levels are shown in ULBP1, ULBP3, and FAS (in bold italic). In comparison, the expression levels reduced in PVR-1, PVR-2, Nectin 2-1, and Nectin 2-2 (in gray bold italic)Back to article page