Immune system cell,SEM

Numéro d’image : 11869946
Immune system cell,SEM
Immune system cell. Coloured scanning electron micrograph (SEM) of a lymphocyte cell,a type of white blood cell involved in the immune system. 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
Licence : Droits gérés
Crédit: Science Photo Library / Gschmeissner, Steve
Taille de l’image : 3117 px × 2808 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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