IL2RG and neoplasm: More specifically, three distinct and stable primary tumour propagating cell lineages (hcc-1, hcc-2 and hcc-3) obtained from a 74-year-old male patient with advanced HCC were expanded and extensively characterised by means of flow cytometry, fluorescence microscopy, karyotyping and microarray analyses, single cell cloning, and xenotransplantation in NOD/SCID/IL2Rγ−/− (NSG) mice.