0, spleen cells were restimulated with CSP-peptide or OVA-peptide and IFNγ production in spot forming units (SFU) was analyzed using ELISPOT. Data are expressed as mean +**/−** SD of 0 mice. This experiment was repeated twice with similar results. (B) Percentage of CD0^+^CSP^+^ spleen cells stained using PE-labeled anti-CD0 and APC-labeled MHC-I-pentamer loaded with CSP-peptide to detect CSP-specific CD0^+^ T cells. The mean of five immunized F0 DEREG mouse or a F0 non-transgenic littermates is shown. The percentage of CD0^+^CSP^+^ T cells is expressed as mean +**/−** SD of whole lymphocytes. 