exocytosis


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exocytosis

 [ek″so-si-to´sis]
1. the discharge from a cell of particles that are too large to diffuse through the wall; the opposite of endocytosis.
2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response.

ex·o·cy·to·sis

(ek'sō-sī-to'sis),
1. The appearance of migrating inflammatory cells in the epidermis.
2. The process whereby secretory granules or droplets are released from a cell; the membrane around the granule fuses with the cell membrane, which ruptures, and the secretion is discharged. Synonym(s): emeiocytosis, emiocytosis Compare: endocytosis.
[exo- + G. kytos, cell, + -osis, condition]

exocytosis

/exo·cy·to·sis/ (-si-to´sis)
1. the discharge from a cell of particles that are too large to diffuse through the wall; the opposite of endocytosis.
2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response.

exocytosis

(ĕk′sō-sī-tō′sĭs)
n. pl. exocyto·ses (-sēz′)
A process of cellular secretion or excretion in which substances contained in vesicles are discharged from the cell by fusion of the vesicular membrane with the outer cell membrane.

ex′o·cy·tose′ (-tōs′) v.
ex′o·cy·tot′ic (-tŏt′ĭk) adj.

exocytosis

[ek′sōsītō′sis]
Etymology: Gk, exos, outside + kytos, a hollow vessel
discharge from a cell of particles that are too large to diffuse through the wall. Compare endocytosis.

ex·o·cy·to·sis

(eksō-sī-tōsis)
1. The appearance of migrating inflammatory cells in the epidermis.
2. The process whereby secretory granules or droplets are released from a cell; the membrane around the granule fuses with the cell membrane, which ruptures, and the secretion is discharged.
Synonym(s): emeiocytosis, emiocytosis.
Compare: endocytosis
[exo- + G. kytos, cell, + -osis, condition]

exocytosis

The movement of peptides or proteins out of a cell into the extracellular fluid, in tiny membranous vesicles that pass through the plasma membrane.

exocytosis

an active process in which vesicles containing excretory or secretory materials are actively carried to the periphery of the cell, and released to the outside when the vesicle membrane fuses with the cell membrane. Compare ENDOCYTOSIS. See PHAGOCYTOSIS, PINOCYTOSIS.

ex·o·cy·to·sis

(eksō-sī-tōsis)
Appearance of migrating inflammatory cells in the epidermis.
[exo- + G. kytos, cell, + -osis, condition]

exocytosis

(ek´sōsītō´sis),
n the active transport of material from a vesicle out into the extracellular environment.

exocytosis

1. the discharge from a cell of particles that are too large to diffuse through the plasma membrane; the opposite of endocytosis.
2. the aggregation of migrating leukocytes in the epidermis as part of the inflammatory response.
References in periodicals archive ?
The various granule subtypes of human neutrophils are formed sequentially during myeloid cell differentiation and differ in their propensity for exocytosis.
2+]-Regulating mechanisms that modulate bull sperm capacitation and acrosomal exocytosis as determined by chlortetracycline analysis.
2+] influx, which triggers [beta]-granule exocytosis, (5) action potential is terminated by the opening of voltage-dependent [K.
45] AQP7 is likely to play a dual role in the regulation of insulin release, by allowing the entry or exit of glycerol and by acting directly or indirectly at a distal downstream site in the insulin exocytosis pathway.
Sedmikova, "The effect of protein kinase C activator and nitric oxide donor on oocyte activation and cortical granule exocytosis in porcine eggs," Animal, vol.
This facilitates the exocytosis of insulin containing granules of A3/4 cell.
A skin biopsy taken from the arm showed epidermal hyperkeratosis, focal parakeratosis, exocytosis, diffuse lysis of the basal layer, band-like lymphocytic infiltration of the dermis, lymphocytic infiltrate around the hair follicle, and scattered melanin incontinence (Figure-2a).
Ions concentrated in vacuoles may be secreted by exocytosis (Ziegler & Luttge, 1967; Echeverria, 2000).
Specific nanoelectrical designs, materials, and dynamics are then discussed in Section II, including monolayer-protected clusters, semiconductor photochemistry, single-molecule electronics, solid-state devices, stochastic events, carbon nanostructures, electrodeposition, nanoporosity, microelectrode investigation of living cells, applications in proteins and enzymes, and exocytosis measurement.
However, variable epidermal changes (hyperkeratosis, parakeratosis, acanthosis, flattened rete pegs, oedema, spongiosis, and occasionally basal cell degeneration, exocytosis, and subcorneal pustule), moderate to dense, perivascular, periadenexal neutrophilic dermal infiltrate, and vasculopathy (vascular dilatation, endothelial oedema, extravasation of erythrocytes) are highly characteristic of Sweet's syndrome while true leukocytoclastic vasculitis occurs occasionally.
Its function may be related mainly to the transport of nutrients from the lumen into the hemocoel, secretion, endocytosis and exocytosis, and to increasing the resistance of the spermathecal epithelium filled with sperm (Gobin et al.