To complement this analysis, we sought to obtain information from human adult OPCs, evaluating the effects of both anosmin-1 and FGF2 on three kinds of human OPCs in chemotaxis chambers: an oligodendroglioma cell line (HOG cells), and on OPCs isolated from tumor tissue (malOPCs) and non-tumor tissue (haOPCs) obtained through neurosurgery (the exact origin of these samples is indicated in the Methods). This evidence concerns the gene FGF2 and oligodendroglioma.