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In cell biology, a phagosome is a vesicle formed around a particle engulfed by a phagocyte via phagocytosis. Professional phagocytes include macrophages, neutrophils, and dendritic cells (DCs). [1] A phagosome is formed by the fusion of the cell membrane around a microorganism, a senescent cell or an apoptotic cell.
The phagocyte then stretches itself around the bacterium and engulfs it. Phagocytosis of bacteria by human neutrophils takes on average nine minutes. [25] Once inside this phagocyte, the bacterium is trapped in a compartment called a phagosome. Within one minute the phagosome merges with either a lysosome or a granule to form a phagolysosome.
Phagosome Formation: Once the phagocytic cup has almost completely surrounded the target, the membrane extensions seal together, forming an intact phagosome containing the engulfed material. [9] Phagosome Maturation: The newly formed phagosome undergoes a series of transitions similar to endosome maturation. This process involves the recycling ...
Phagocytosis (from Ancient Greek φαγεῖν (phagein) 'to eat' and κύτος (kytos) 'cell') is the process by which a cell uses its plasma membrane to engulf a large particle (≥ 0.5 μm), giving rise to an internal compartment called the phagosome. It is one type of endocytosis. A cell that performs phagocytosis is called a phagocyte.
The word 'phagocyte' literally means 'eating cell'. These are immune cells that engulf, or ' phagocytose ', pathogens or particles. To engulf a particle or pathogen, a phagocyte extends portions of its plasma membrane , wrapping the membrane around the particle until it is enveloped (i.e., the particle is now inside the cell).
After years of waiting for a bigger and better College Football Playoff, the moment has finally arrived.The bracket is set and the games are here. The inaugural 12-team field has a few surprises ...
A Chinese hack compromised even more U.S. telecoms than previously known, including Charter Communications, Consolidated Communications and Windstream, the Wall Street Journal reported late on ...
As cases of the HMPV virus continue to increase in the U.S. and in China, here's what you need to know about the virus.
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