Promising results in inducing both CD4+ and CD8+ T lymphocyte response showed dendritic cells, although the number of antigen epitopes they can present is limited and their production is not cost-effective, while the usage of Chinese hamster ovary cells showed desired induction of neutralizing antibodies with no specific adjuvant needed However, all positive results are in favor of the further spread of infection and inhibition of the incidence of lymphomas rather than inhibition of primary infection. The gene discussed is CD4; the disease is infection.