What is a peripheral blood for cd8 done for?
Although an increased frequency of CD4 + CD8 + T cells has been observed in the peripheral blood during viral infections, their role, function, and biologic significance are still poorly understood.requency and function of CD4 + CD8 + T cells in HCV-infected patients. To assess whether CD4 + CD8 + T cells also participated in the immune response in persistent viral infections and whether they were present at the site of infection, we analyzed their frequency and function in HCV infection.