Differential costimulation through CD137 (4–1BB) restores proliferation of human virus-specific “effector memory” (CD28− CD45RAHI) CD8+ T cells
Rescue of thymocytes from glucocorticoid-induced cell death mediated by CD28/CTLA-4 costimulatory interactions with B7-1/B7-2.
A pathway of costimulation that prevents anergy in CD28- T cells: B7-independent costimulation of CD1-restricted T cells.
T Cell Costimulation through CD28 Depends on Induction of the Bcl-xγ Isoform : Analysis of Bcl-xγ–deficient Mice
A dose-dependent requirement for the proline motif of CD28 in cellular and humoral immunity revealed by a targeted knockin mutant