Disruption of the Class C VPS complex promotes tumor growth and metastasis in RasV12 cells. A, quantitative real-time reverse transcription-PCR results indicate that the car mRNA level in third-instar larvae was significantly reduced by RNAi. Actin mRNA levels were used as internal controls. *, p < 0.0001. Error bars indicate S.D. B and C, micrographs of compound eye from control (B) and carRNAi (C) flies, indicating the pigmentation defect in the carRNAi eye. D–I, larvae/pupae and dissected cephalic complexes from third-instar larvae with indicated genotypes. Both carRNAi and vps16ARNAi cause overgrowth and metastasis of GFP-positive RasV12 cells. D, F, and H are in the same magnification. E, G, and I are in the same magnification.