PROM1 and neoplasm: To test the efficacy of tumor growth, we divided experimental NOD/SCID mice into three groups (n = 6 per group), and they were subcutaneously (s.c.)injected with SKOV3 spheres with CD133 transduction (SP-CD133), SKOV3 spheres with mock transduction (SP-Mock), or parental SKOV3 (SKOV3-P) cells.