Figure 2. Expression of ss-Peptide Transgenes.
(A) Expression of H-2Kb is not upregulated in TAP° mice expressing ss-peptide transgenes. Expression levels of the MHC class I molecule Kb were compared on splenocytes from ss-OVApTAP° (thin black line), ss-R4TAP° (dashed line), ss-VSVTAP° (dotted line), TAP° (bold gray line), and B6 (bold black line) mice.
(B) ss-peptide transgenic APC stimulate proliferation of peptide-specific CTL. Filled symbols represent ss-peptide transgene positive and open symbols represent control transgene negative APC. R4-specific CTL were incubated with ss-R4TAP° (filled triangles) and control TAP° (open triangles) splenocytes (left panel). VSV-specific CTL were incubated with ss-VSV (filled circles) and control B6 (open circles) splenocytes (right panel). Peptide-specific CTL (5 × 104) were cultured with increasing numbers of irradiated APC for 72 hr and were pulsed with [3H]thymidine for 18 hr.