Coloured SEM of human natural killer blood cell

Coloured SEM of human natural killer blood cell

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Credit: EYE OF SCIENCE/SCIENCE PHOTO LIBRARY

Caption: Natural killer cell. Coloured Scanning Electron Micrograph (SEM) of a human Natural Killer (NK) cell. The NK cell has numerous cellular projections which are used to attack foreign cells. Natural killer cells are a type of white blood cell. As part of the body's immune response mechanism, NK cells have the ability to destroy virus-infected cells & tumour cells. On contact with the surface of a tumour cell, the NK cell recognizes certain proteins called antigens, which activate its cell- killing mechanism. The NK cell then binds to & destroys the cancer cell using toxic chemicals. Magnification: x6,500 at 6x6cm size.

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Keywords: anatomy, cells, human body, immune, killer lymphocyte, lymphocyte, natural, natural killer, natural killer cell, nk, t-lymphocyte, white blood cell

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