Activated T lymphocytes, SEM

Numéro d’image : 12493438
Activated T lymphocytes, SEM
Activated T lymphocytes. Coloured scanning electron micrograph (SEM) of a clump of activated T lymphocytes 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 become activated to produce 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: x3500 when printed at 10 centimetres wide
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4550 px × 3915 px
Model Release : Non requis
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