In a mouse model of protease‐induced pulmonary inflammation, ILC2 and Th2 cells play a critical role in development phases of eosinophilic inflammation in response to type 2 epithelial cytokines; TSLP is important for Ovalbmin (OVA) immunisation‐induced Th2 cell responses, whereas IL‐33 activates ILC2 cells to promote Th2 cell responses.167. The gene discussed is TSLP; the disease is inflammation.