Medically reviewed by Steffini Stalos, DO Key Takeaways CD4 T helper cells help the body fight infections by signaling other cells to attack germs. Without enough CD4 T cells, the body can't fight ...

A newly recognized set of T helper cells seems to guard against aging by eliminating harmful senescent cells. Their presence in supercentenarians suggests they may be a key to maintaining a healthier, ...

The 1995 discovery of regulatory T cells underpins newer investigations pointing to potential allergy treatments and ...

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 ...

Mary Brunkow, Fred Ramsdell, and Shimon Sakaguchi were awarded the 2025 Nobel Prize in Physiology or Medicine on Monday for their collective work in the discovery of specialized immune cells that roam ...

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 ...