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Figure S4. Competitive analysis for memory Th2 cell generation from Bmi1+/+and Bmi1+/− effector Th2 cells under nonlymphopenic conditions. Thy1.1 Bmi1+/+ (Ly5.2 background) and Thy1.2 Bmi1+/− (Ly5.2 background) effector Th2 cells were mixed (1:1) and transferred (3 × 107 cells/mouse) into syngeneic C57BL/6 mice with Ly5.1 background. Typical staining patterns of mixed cells for cell transfer (A) and of transferred donor-derived cells (Ly5.2) from the indicated tissues (B) are shown.