Medically reviewed by Steffini Stalos, DO Key Takeaways CD4 T helper cells help the body fight infections by signaling other ...

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 ...

As people age, their immune system function declines. T cell populations become smaller and can't react to pathogens as ...