Il17rb expression in the BM and during IL-33–induced type 2 inflammation. (A) Representative flow cytometry plots showing Il17rb expression in CLPs and CHILPs (immunophenotype: CD45⁺Lineage⁻Sca1^−/intCD25⁻). (B) Representative flow cytometry plots of Il17rb expression in CD45⁺Lineage⁻Sca1^highCD25⁺ ILC2s. (C) Representative histogram of eGFP expression by LSK (Lineage⁻Sca-1⁺C-kit⁺) versus BM ILC2s (Lineage⁻CD127⁺Sca-1⁺CD25⁺) in Il17rb-CreERT2-eGFP and C57BL/6 mice. (D) Representative flow cytometry plots showing Il17rb expression in eosinophil progenitors. (E) Representative histogram depicting Il17rb expression in lung ILC2s (Lineage⁻CD127⁺ST2⁺KLRG1⁺) during IL-33–induced inflammation (gray: C57BL/6; red: Il17rb-CreERT2-eGFP). (F) Representative flow cytometry plots showing Il17rb expression in live CD45⁺Lineage⁻CD127⁺ST2⁺ ILC2s. (G) Representative histogram comparing Il17rb expression in live CD45⁺CD3⁺ T cells and Lineage⁻CD127⁺ST2⁺ ILC2s in the lungs. (H)Il17rb expression in CD45⁺CD11c⁻CD11b⁺SiglecF⁺ eosinophils during IL-33–induced airway inflammation. Data are representative of two to three independent experiments. CLPs, common lymphoid progenitors; CHILPs, common helper innate lymphoid progenitors.