Fig. 3.

T cells from SNV-infected deer mice exhibit weak recall proliferation responses to N-Ag. T cell lines established from acutely infected deer mice (A) and persistently infected deer mice (B) were cultured in duplicate with autologous bone-marrow-derived APCs at various concentrations of antigen for 3 days; after which, proliferation was assessed by MTS assay. The means and SDs were plotted and compared with T cells from control deer mice immunized with KLH (DM21 and DM22).