Expression of TIM family members on mouse mast cells. (A) Expression of TIM-1, TIM-2, TIM-3, and TIM-4 and of TIM-1 and TIM-3 ligands on naive or IgE + Ag–stimulated c-Kit⁺ FcϵRIα⁺ BMCMCs derived from C57BL/6J or (for TIM-3) C57BL/6Ka mice. (B) Expression of TIM-1, TIM-2, TIM-3, and TIM-4 on peritoneal c-Kit⁺ FcϵRIα⁺ mast cells from C57BL/6J mice. Results in panels A and B are representative of similar results that were obtained in 3 independent experiments.