Lymphocyte white blood cell, SEM

Bildnummer 12395191
Lymphocyte white blood cell, SEM
Lymphocyte white blood cell. Scanning electron micrograph (SEM). Its surface is covered in characteristic microvilli. Lymphocytes are divided into either B-cells or T- cells. B-cells mature in bone marrow and are responsible for humoural immunity; they operate by recognising a specific site on the surface of a pathogen or foreign object (antigen), which they then bind to before producing antibodies to destroy that antigen. T-cells mature in the thymus and are involved in cell-mediated immunity, which does not rely on antibodies to fight antigens, but rather the activation of macrophages, NK-cells, cytotoxic T-lymphocytes and various cytokines. Magnification: x6000 when printed at 10 centimetres wide.
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / Gschmeissner, Steve
Bildgröße: 4572 px × 4593 px
Modell-Rechte: nicht erforderlich
Eigentums-Rechte: nicht erforderlich
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