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Endocytosis in Biological Definition

Antigen

... Exogenous antigens are antigens that have entered the body, e.g., by inhalation, ingestion, or injection. These antigens are taken up by endocytosis or phagocytosis into the antigen presenting cells (APCs), and degraded into fragments. The fragments are then presented on the surface of APCs by ...

Biological membrane

... to cross the membrane by itself, but is still needed by a cell, it could either go through one of the protein channels, or be taken in by means of endocytosis . More general information on this topic may be found in the article at cell membrane . See also membrane protein ...

Cell growth

... components from adjacent cells through cytoplasmic bridges ( Drosophila ) or by internalization of nutrient storage granules (yolk granules) by endocytosis ( frogs ). Increases in the size of plant cells is complicated by the fact that almost all plant cells are inside of a solid cell wall . Under ...

Eukaryote

... called vesicles or vacuoles , can form by budding off of other membranes. Many cells ingest food and other materials through a process of endocytosis , where the outer membrane invaginates and then pinches off to form a vesicle. It is probable that most other membrane-bound organelles are ...

Cell membrane

... This can be either symport (in the same direction) or antiport (in the opposite direction). See also: active transport . Examples include: endocytosis exocytosis , in which molecules packaged in membrane vesicles are either imported or exported, respectively. Molecular exchangers , ...

Cell membrane

... This can be either symport (in the same direction) or antiport (in the opposite direction). See also: active transport . Examples include: endocytosis exocytosis , in which molecules packaged in membrane vesicles are either imported or exported, respectively. Molecular exchangers , ...

Virus

... attached, enzymes make a small hole in the cell wall, and the virus injects its DNA into the cell. Other viruses (such as HIV ) enter the host via endocytosis , the process whereby cells take in material from the external environment. After entering the cell, the virus's genetic material begins the ...
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