Lymphocyte white blood cell, SEM

Numéro d’image : 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.
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 4572 px × 4593 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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