Coloured TEM of a human B-lymphocyte blood cell

Coloured TEM of a human B-lymphocyte blood cell

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Credit: DR GOPAL MURTI/SCIENCE PHOTO LIBRARY

Caption: B-lymphocyte. Coloured transmission electron micrograph (TEM) of a section through a human B- lymphocyte, a type of white blood cell involved in the body's immune response. The nucleus is green. In the blue cytoplasm, red oval areas are mitochondria which provide the cell with energy. There are 2 main types of lymphocyte: B- cells and T-cells. B-cells are made in the bone marrow and provide an immune response by secreting antibodies. T-cells are derived from the thymus gland and give rise to a cell-mediated response, by physically destroying pathogens (as killer T- cells) and by summoning killer macrophages. Magnification: x8,000 at 6x7cm size. Magnification: x27,300 at 10x8 inch size.

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Keywords: anatomy, b, b-cell, b-lymphocyte, blood cell, cell, cell structure, cells, human body, immune, leucocyte, leukocyte, lymphocyte, nucleus, white, white blood cell

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