# The 2025 Nobel Prize for medicine was awarded to a Japanese and two American scientists for unravelling how the immune system protects the human body from thousands of different microbes trying to invade it. Mary E. Brunkow, Fred Ramsdell and Shimon Sakaguchi will share the prize for identifying “regulatory T cells,” acting as the immune system’s security guards and preventing immune cells from attacking a person’s own body. Their findings have led to the development of medical treatments to potentially cure auto-immune diseases, provide more effective cancer treatments, and reduce complications after transplants.
Nobel Prize for medicine to trio of scientists for discovering how immune system is kept in check