CD8A and infection: Fig. 7B represents CD8 T cell proliferation as determined by CFSE dilution measured at day 6 after stimulation with MVA-C at different virus multiplicities. High proliferation up to 20% was observed after infection with 106 pfu of MVA-C. Together, the data of Fig. 7 revealed that both cross-presentation and proliferation of CD8 T cells are induced by MVA-C infection of human immune cells.