Revealed: How the ‘Iron Man’ of immune cells helps T cells fight infection

The immune system’s killer T cells are crucial in fighting viral infections. A fraction of them – memory cells – live on once infection is controlled in order to fight re-infection by the same virus. They are of great interest as the basis of T cell-based vaccination and immunotherapies. Now, scientists have revealed the mechanisms by which other immune cells called ‘helper T cells’ are able to provide the support needed to keep memory cells functioning optimally.

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