Natural killer cells may respond better on second antigen encounters, but how this memory is induced or maintained in vivo is not clear. Here the authors show that memory NK cells expressing interleukin-7 (IL-7) receptor are induced in the lymph nodes but later recruited to liver for long term, IL-7 dependent survival and memory maintenance.
- Xianwei Wang
- Hui Peng
- Zhigang Tian
