IFNG and neoplasm: Subcutaneous synergic mouse tumour model with intra-tumoural OV injection: Disease control: significantly decreased tumour growth compared to parental virus and untreatedImmune response: significant increase in tumour T cell infiltration and a decrease in Treg infiltration compared to parental OV and untreated; increased splenocyte IFN-γ release upon re-stimulation with tumour cells in vitro compared to parental OV and untreated