Vesicle: Difference between revisions
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Revision as of 12:46, 10 January 2011
A vesicle is a membrane-bound sac found in many cells, which is formed when part of a compartment membrane buds off[1]. Vesicles are vital for the taking up, release and transport of molecules within and between cells. Many cells take up molecules via receptor-mediated endocytosis, the process by which binding of a particular protein or other complex causes invagination of the membrane, which eventually breaks off forming a vesicle containing the desired protein or substance[1]. The opposite of this process is exocytosis, whereby a vesicle fuses to a membrane, releasing its contents[1].
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