T lymphocytes and neutrophil, SEM

Numéro d’image : 12378281
T lymphocytes and neutrophil, SEM
T lymphocytes (pre-T cells) and granulocyte (neutrophil), scanning electron micrograph (SEM). Lymphocytes are involved in the specific immune response and are composed mainly of precursor T cells (pre-T cells) and B cells. Pre-T cells and B cells are subsets of lymphocytes that originate in the red bone marrow from hematopoietic stem cells. Pre-T cells circulate in the blood before migrating to the thymus where they develop into specialized cells (helper T cells and killer T cells) that are able to identify antigens and infected tissue cells. Granulocytes are leukocytes with granules in their cytoplasm that contain destructive chemicals. Neutrophils are involved in inflammation and other immune responses. They assist in cellular defence (phagocytosis) of pathogenic microorganisms. A neutrophil destroys an antigen by engulfing it and injecting lethal chemicals. Magnification: x1, 600 when shortest axis printed at 25 millimetres.
Licence : Droits gérés
Crédit: Science Photo Library / DENNIS KUNKEL MICROSCOPY
Taille de l’image : 3302 px × 2646 px
Model Release : Non requis
Property Release : Non requis
Restrictions : -

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