Analysis of tumour-infiltrating DCs (TIDCs) revealed a marked increase in CD8α+ TIDCs within TSA tumours after 8GyX3 but not 20 Gy radiation, consistent with the requirement for IFNβ for recruitment to the tumour of CD8α+ DCs, essential for optimal priming of anti-tumour CD8+ T cells13. The gene discussed is CD8A; the disease is neoplasm.