The immune system is the body’s natural defense system: a network of cells, molecules, tissues, and organs working together to protect the body. Each of these elements plays a key role in how the immune system works and its function as a whole, which is crucial to preventing infection or disease, including cancer.
Immune cells may act as "first responders" at the site of an infection, as teachers who guide other cells how to respond, or even as chameleons who become the right cell when and where it is needed. If you were an immune cell, which one would you be?
Learn more about how the immune system works