al [39], who did not detect Leu11b positive cells despite the presence of Leu7 (CD56) positive infiltrates in various brain tumour specimens and our own studies that did not detect CD16 positive NK cells in GBMs, it is possible that in oligodendrogliomas a similar expression pattern of CD56+CD16− occurs as in the other gliomas. This evidence concerns the gene NCAM1 and oligodendroglioma.