22
Oct
For stimulation of spleen cells and maintenance of T-cell clones, we added to the medium 2-mercaptoethanol, sodium pyruvate, nonessential amino acid solutions, vitamin, 10% fetal calf serum (FCS; Hyclone, Logan, Utah), and 30 U of recombinant human interleukin-2 (IL-2; kindly provided by Hoffmann-LaRoche) per ml. peptides, we determined a CD8 epitope recognized by several clones as being represented by BIO-acetoxime amino acids IYNVGQVSI. The antiparasitic activity of a CD4 Th1 and a CD8 Tc1 clone was assessed in vitro. CD4 or CD8 T cells significantly inhibited development in infected macrophages or fibroblasts, respectively. We concluded that DNA vaccine efficiently generates…