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HIV is a disease of the gut, a concept that's easy to lose sight of with all the attention paid to sexual transmission and blood measurements of the virus and the CD4+ T cells it infects and kills. But the bottom line is that about two thirds of all T cells reside in the lymphoid tissue of the gut, where the virus spreads after exposure, even before it shows up in blood.

Millions of people suffer from asthma, a frightening disease that makes you feel like you're drowning. Using both mouse and human cells - and a humanized mouse to show how human type 2 innate lymphoid cells (ILC2) work in the body, researchers at Janssen Research and Development, Dana-Farber Cancer Institute and Harvard Medical School are figuring out ILC2's role in asthma. Their findings have important implications in the quest for effective asthma therapies!