Human dendritic cell, SEM

Bildnummer 12298012
Human dendritic cell, SEM
Human dendritic cell, coloured scanning electron micrograph (SEM). Dendritic cells (also known as histiocytes or Langerhans cells in the epidermis) are part of the human immune system. They are macrophage cells that are found in the body's tissues. In the central nervous system dendritic cells are known as microglia, and in the liver as Kupffer cells. The long extensions projecting from the cell help them to move. Dendritic cells recognize and engulf foreign cells and proteins (antigens). Dendritic cells may then display the foreign antigen as a warning of the infection to other immune cells. They act as antigen presenting cells (APCs) that present the digested parts of phagocytosed pathogens to other immune system cells to enhance the immune response. Once activated, the dendritic cells migrate to the lymphoid tissues where they interact with T cells and B cells to initiate and shape the adaptive immune response. Magnification: x340 when shortest
Lizenzart: Lizenzpflichtig
Credit: Science Photo Library / DENNIS KUNKEL MICROSCOPY
Bildgröße: 2726 px × 3206 px
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Eigentums-Rechte: nicht erforderlich
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