Table 1. IL-22-producing cells and transcription factors.

Cell subset	Stimulating cytokines	Transcription factor
Th17 cells	IL-6	AHR
Th22 cells	IL-6 and TNFα	AHR
γδT cells	IL-23	AHR
NK cells	IL-12 and IL-18 or IL-23	RORγt
RORγt-positive ILCs	Il-23	RORγt