Researchers at the Medical University of Vienna have taken a closer look at a previously largely unknown component of the immune system: the protein molecule TRAT1 (T Cell Receptor Associated ...

Interleukin-9 (IL-9) is a multifunctional cytokine that plays a critical role in regulating immune responses, allergic inflammation and host defence mechanisms. T helper 9 (TH9) cells, a specialised ...

During infections, the immune system needs to distinguish foreign molecules from invading bacteria and viruses from molecules that are made by cells of the body. If it can’t, the immune system can ...

As people age, their immune system function declines. T cell populations become smaller and can't react to pathogens as quickly, making people more susceptible to a variety of infections. To try to ...