endocytosis

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Related to endocytose: exocytose, endocytotic

endocytosis

 [en″do-si-to´sis]
the uptake by a cell of material from the environment by invagination of the plasma membrane; it includes both phagocytosis and pinocytosis.
Endocytosis. Shown are pinocytosis of small fluid droplets (left) and phagocytosis of a large particle (right). From Dorland's, 2000.

en·do·cy·to·sis

(en'dō-sī-tō'sis),
Internalization of substances from the extracellular environment through the formation of vesicles formed from the plasma membrane. There are two forms: (a) fluid phase (pinocytosis), and (b) receptor mediated.
See also: phagocytosis. Compare: exocytosis (2).
[endo- + G. kytos, cell, + -osis, condition]

endocytosis

/en·do·cy·to·sis/ (-si-to´sis) the uptake by a cell of material from the environment by invagination of its plasma membrane; it includes both phagocytosis and pinocytosis.

endocytosis

(ĕn′dō-sī-tō′sĭs)
n.
A process of cellular ingestion by which the plasma membrane folds inward to bring substances into the cell.

en′do·cyt′ic (-sĭt′ĭk), en′do·cy·tot′ic (-sī-tŏt′ĭk) adj.
en′do·cy·tose′ (-tōs′) v.

endocytosis

[en′dōsītō′sis]
Etymology: Gk, endon, within, + kytos, cell
uptake by a cell of material from the environment by invagination of its plasma membrane, which may be either phagocytosis or pinocytosis. Compare exocytosis.
enlarge picture
Endocytosis

en·do·cy·to·sis

(en'dō-sī-tō'sis)
Internalization of substances from the extracellular environment through the formation of vesicles formed from the plasma membrane.
See also: phagocytosis
Compare: exocytosis (2)
[endo- + G. kytos, cell, + -osis, condition]

endocytosis

A method by which a large molecule, such as a protein, can enter a cell. The plasma membrane of the cell is invaginated by the molecule so that an internal vesicle is formed containing the molecule. This then breaks off from the surface membrane and moves into the interior of the cell. Such vesicles are coated with a protein called clathrin.

endocytosis

an active process by which some cells can enclose a smaller body (e.g. a food particle) forming a membrane-bound vesicle. Compare EXOCYTOSIS. See PHAGOCYTOSIS, PINOCYTOSIS.

endocytosis

the uptake by a cell of material from the environment by invagination of the plasma membrane; it includes both phagocytosis and pinocytosis.

receptor mediated endocytosis
uptake of materials bound to specific cell-surface receptors by invagination of the plasma membrane to form a small membrane-bounded vesicle; a mechanism for entry of viruses into cells.
References in periodicals archive ?
This imbalance provides a definitive characteristic of colostrum and is explained by the presence of specific receptors on the basal membrane of secretory epithelial cells which actively endocytose IgG1 and pass it to the secretory lumen of the alveolus (Butler, 1983; Barrington et al.
Activated antigen-specific B-cells are viewed as very potent antigen-presenting cells (APC) that can endocytose, process and present antigen at least 10 000-fold more efficiently than other professional APC, (5) largely because B-cells can selectively internalize antigen through the B-cell receptor, and efficiently stimulate T-cells through co-stimulatory molecules such as CD80 and CD86 (which are ligands for CD28 and CTLA-4 expressed on T-lymphocytes).
aureus bacterial cells, which do not endocytose but rely on membrane transporters.