T follicular helper cells are a distinct subtype of CD4 T helper cells, which contributes to the regulation of type 2 humoral immunity by producing IL-4. Here, the authors identify Batf as an important transcription factor regulating IL-4 expression in T follicular helper cells but not in Th2 cells.
- Anupama Sahoo
- Andrei Alekseev
- Roza Nurieva