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Cell-mediated immune response

Cell-mediated immune response

P266/0108

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Credit

RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY RUSSELL KIGHTLEY / SCIENCE PHOTO LIBRARY

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Caption

Cell-mediated immune response, computer artwork. This type of immune response is most often used against intracellular pathogens, such as viruses. The viruses (gold) are phagocytosed (engulfed) by macrophage cells (green), a type of white blood cell. Fragments of viral protein (antigen) are displayed on the macrophage's surface. The antigen is recognised by a helper T lymphocyte (purple, centre and right), which secretes chemicals to activate other immune cells, including cytotoxic T lymphocytes (purple, left). The cytotoxic cells release chemicals that cause the macrophages to disintegrate and die, killing the viruses inside as well.

Release details

Model release not required. Property release not required.

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