
The same specialized immune cells that patrol the body and spot infections also trigger the expansion of immune organs called lymph nodes, scientists have discovered. The immune system defends the body from infections and can also spot and destroy cancer cells. Lymph nodes are at the heart of this response, but until now it has never been explained how they expand during disease.
http://feeds.sciencedaily.com/~r/sciencedaily/~3/_nja9vZ5yO8/141022130603.htm