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 ...

Rheumatoid arthritis (RA) is an autoimmune disease that affects millions worldwide and can have a devastating impact on patients' lives. Yet, about one in three patients respond poorly to existing ...

After spending years tracing the origin and migration pattern of an unusual type of immune cell in mice, researchers headed by a team at The Ohio State University College of Medicine have shown how ...

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, ...

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 ...

New research shows how a specially trained population of immune cells keeps the peace by preventing other immune cells from attacking their own. The study provides a better understanding of immune ...

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 ...