T cell exhaustion (IMAGE)

La Jolla Institute for Immunology

T cell exhaustion

Caption

Prolonged overactivity of killer T cells summoned to a tumor or infection site can render them useless to dispatch invaders, a cellular state immunologists call "exhaustion." Image: Superresolution image of a group of killer T cells (green and red) surrounding a cancer cell (blue, center).

Credit

National Institutes of Health

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