Activated T Lymphocyte #7
by Steve Gschmeissner/science Photo Library
Title
Activated T Lymphocyte #7
Artist
Steve Gschmeissner/science Photo Library
Medium
Photograph - Photograph
Description
Activated T lymphocyte. Coloured scanning electron micrograph (SEM) of an activated T lymphocyte from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus. T lymphocytes recognise a specific site on the surface of pathogens or foreign objects (antigens), bind to it, and attract antibodies or cells to eliminate that antigen. Morphologically the cells become more adherent and flattened with many more processes when activated. Specimen courtesy of Professor Greg Towers, University College London. Magnification: x7000 when printed at 10 centimetres wide
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February 24th, 2021
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