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- Dictionarypinocytosis/ˌpɪnə(ʊ)sʌɪˈtəʊsɪs/
noun
- 1. the ingestion of liquid into a cell by the budding of small vesicles from the cell membrane.
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noun
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In cellular biology, pinocytosis, otherwise known as fluid endocytosis and bulk-phase pinocytosis, is a mode of endocytosis in which small molecules dissolved in extracellular fluid are brought into the cell through an invagination of the cell membrane, resulting in their containment within a small vesicle inside the cell. These pinocytotic vesicles then typically fuse with early endosomes to hydr... Wikipedia