NIAID / NATIONAL INSTITUTES OF HEALTH / SCIENCE PHOTO LIBRARY NIAID / NATIONAL INSTITUTES OF HEALTH / SCIENCE PHOTO LIBRARY
T-Lymphocyte, coloured scanning electron micrograph (SEM). 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 produce antibodies or cells to eliminate that antigen.
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