Figure 3. B-16-OVA melanoma induces anergy in tumor-infiltrating antigen specific CD4+ T cells.
A. CD4+ T cells from DLN, non-DLN and tumor infiltrating lymphocytes (TIL) were isolated from B16-OVA tumor bearing (5×105 cells) OT-II mice and stimulated with anti-CD3 and anti-CD28 antibodies. IL-2 production was measured by ELISA and is presented as mean±SEM from 3 independent experiments. *P<0.05 (TIL vs. non-DLN). B. CD4+ TIL and T cells from spleens of B16-OVA bearing mice were isolated and immediately lysed for RNA extraction. Grail message levels were detected by real-time PCR. Results are presented as mean±SEM from 3 mice.
