T-bet and Gata3 in controlling type 1 and type 2 immunity mediated by innate lymphoid cells

► A T-bet gradient controls fate and function of CCR6− ILC3s. ► T-bet and the control of ILC-mediated immunity to infections. ► Gata3 and ILC2 cell fate. ► ILC2P, a lineage specified progenitor of ILC2s.