IFNG and Crohn disease: NKp44-negative, c-kit-low ILCs expressing T-bet and IFN-γ and responding to IL-12, but not IL-23, with enhanced IFN-γ production are present in the intestinal lamina propria of patients with Crohn's disease (CD) but not in the fetal gut and in the noninflamed intestine of adults [16].