Figure 1.
Generation of mice overexpressing different peptide–Ab complexes. (A) Schematic of the human invariant chain locus. The Eα, CD22, and Rab peptide sequences replacing CLIP in each of the Ii-peptide Tgs are shown. (B) Splenocytes from C57BL/6, H-2M0, and each of the Ii-peptide mice were stained with antibodies binding Ab (Y3P), mouse CLIP–Ab (15G4), Eα–Ab (YAe), CD22–Ab (A8), and Rab–Ab (H10). Staining of peptide-Ii0 mice are indicated by thin, black lines; peptide-dbl0 mice are indicated by thick, gray lines. (C) Stimulation of T cell hybridomas specific for CD22 (25–39)–Ab, IgM (377–392)–Ab, β2m (48–58)–Ab, or Rab (86–101)–Ab by titrated splenocytes from the indicated mice is shown. IL-2 production was measured by using the IL-2-dependent cell line HT-2. The data are presented as a mean OD570/600 of duplicate cultures.