A dramatic video has captured the behaviour of cytotoxic T cells - the body's 'serial killers' - as they hunt down and eliminate cancer cells before moving on to their next target.
Decades' worth of textbook precepts about how our immune systems manage to avoid attacking our own tissues may be wrong.
Scientists at The University of Manchester have made an important discovery about an immune cell which is already being used in immunotherapy to treat diseases such as type I diabetes.
Many of us take a healthy immune system for granted. But for certain infants with rare, inherited mutations of certain genes, severe infection and death are stark consequences of their impaired immune responses.