what are antigen presenting cell?
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A N S W E R :
Antegin presenting cells known as APCs can simply be defined as the cells that engulf antigens and present fragments to the T cells.
E X T R A I N F O R M A T I O N :
- There are three types of entigen presenting cells in the human body, namely - Macrophages, Dendritic cells and B-cells.
- Macrophages are usually found in a resting states.
- Dendritic cells are characterised by their long cytoplasmic process.
- " Steinman " was awarded the Nobel prize in the year 2011 for his discovery of the dendritic cell and it's role in adaptive immunity.
- B-cells are also known as plasma cells.
- Antibodies already produced by the dascendants of B-cells.
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An antigen-presenting cell (APC) or accessory cell is a cell that displays antigen complexed with major histocompatibility complexes (MHCs) on their surfaces; this process is known as antigen presentation. T cells may recognize these complexes using their T cell receptors (TCRs). APCs process antigens and present them to T-cells.
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