Figure 4.
Shp1-deficient T cells exhibit normal responses to TCR stimulation. (A) T cells were isolated from spleens, labeled with CFSE, and cultured on a 96-well plate coated with cross-linked antibodies against CD3 ± CD28. Cells were harvested 3 d later, stained for CD4 and CD8, and analyzed by flow cytometry. (B) Splenic T cells were sorted into CD44hi and CD44lo populations by FACS, labeled with CFSE, and cultured on a 96-well plate coated with cross-linked antibodies against CD3 and CD28 at the indicated concentrations. Cells were analyzed as in A. (C and D) Cells were treated as in A, harvested 6 h after stimulation, and analyzed for IL-2 (C) and TNF (D) expression by intracellular staining; n = 2. Data are representative of three independent experiments. Values for C and D are displayed as ± standard error.