In concordance with the higher number of CD44+CD24− cells in the DU145 cell line, NOD/SCID mice injected with 3 million DU145 cells formed tumours earlier (approximately 9 days, Table 1) that were 14 times larger at 39 days than NOD/SCID mice injected with LNCaP cells (266.5 vs 18.2 mm3, respectively). The gene discussed is CD44; the disease is neoplasm.