CSF2 and neoplasm: To enhance immune responses to the treated tumor cells, and essentially promote in situ vaccination, an Ad vector expressing the MeV H/F FMGs (Ad.MV-H/F) was tested alone and in combination with Ad vectors expressing various cytokines IL-2, IL-12, IL-18, IL-21 or granulocyte-macrophage colony-stimulating factor (GM-CSF) [73].