Fig. 2.
Development of IL-3–dependent bone marrow–derived mast cells (BMMCs) is normal in γc− and Jak3− mice.
(A) BMMCs (2 × 105/well) were cultured in the presence of IL-3 at 37°C for 36 hours, and the proliferative responses were evaluated by the addition of [3H] thymidine for the final 12 hours. Data are means ± SD for 5 mice in each group. (B) BMMCs from WT, γc−, and Jak3− mice were stained with anti–c-kit APC, anti-FcγII/III PE, and IgE FITC, as described in “Materials and methods.” Shown are representative FACS profiles for c-kit, FcγII/III, and IgE receptor staining from 5 independent experiments. Dashed lines are FACS profiles of negative controls.