Peripheral CD4+ T cells can develop into Intestinal intraepithelial lymphocytes (IEL) in the lamina propria. Here the authors characterise how IEL generation from CD4+ T cells is regulated and show using scRNA sequencing that Ccr9 is involved in this process through limiting IEL precursor differentiation.
- Keiko Ono
- Tomohisa Sujino
- Takanori Kanai