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Human natural killer cells attacking cancer cells

Human natural killer cells attacking cancer cells

M132/0427

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Credit

NANCY KEDERSHA / SCIENCE PHOTO LIBRARY NANCY KEDERSHA / SCIENCE PHOTO LIBRARY

Caption

Natural killer (NK) cells. Immunofluorescent light micrograph of human natural killer cells (small cells, centre) attacking cultured cancer cells (unstained except for large blue nuclei). Granules of cytotoxin in the NK cells' cytoplasm are green. Natural killer cells are lymphocytes which can destroy virus-infected cells & tumour cells in the absence of antibody. On contact with the surface of a tumour cell a NK cell recognizes certain antigens, which activate its cell-killing mechanism. Immunofluorescence is a staining technique which uses antibodies to attach fluorescent dyes to specific tissues and molecules within the cell. Magnification: x312 at 35mm size.

Release details

Model release not required. Property release not required.

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