microvillus


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microvillus

 [mi″kro-vil´us]
a minute process or protrusion from the free surface of a cell, found especially in the proximal convolution of renal tubules and the intestinal epithelium. See illustration.
Microvilli in the intestinal tract. From Applegate, 1992.

mi·cro·vil·lus

, pl.

mi·cro·vil·li

(mī-krō-vil'ŭs, -vil'ī),
One of the minute projections of cell membranes greatly increasing surface area; microvilli form the striated or brush borders of certain cells.

microvillus

/mi·cro·vil·lus/ (-vil´us) a minute process from the free surface of a cell, especially cells of the proximal convolution in renal tubules and of the intestinal epithelium.

mi·cro·vil·lus

, gen. and pl. microvilli (mī'krō-vil'ŭs, -ī)
One of the minute projections of cell membranes greatly increasing surface area; microvilli form the striated or brush borders of certain cells.

microvillus

a minute finger-like process found in numbers projecting from the cell surface where, in epithelium, they form a brush border. Microvilli are found, for example, on the villi lining the small intestine.

microvillus

pl. microvilli; a minute process of protrusion from the free surface of a cell, especially cells of the proximal convolution in renal tubules and of the intestinal epithelium.
References in periodicals archive ?
Note the ciliated non-sensory cells (CN), microvillus (MV), and supporting cells (S) and rod cells (RD).
Loss-of-function of MYO5B is the main cause of microvillus inclusion disease: 15 novel mutations and a CaCo-2 RNAi cell model.
In this study, we find that there are no significant differences in the volume fraction occupied by rhabdomeres in the rhabdomeric layer, the density of the microvilli in the rhabdomere, and the diameter of each microvillus during the development (Table 1).
Sameerah was suffering from microvillus inclusion disease and was very seriously ill," he said.
Also occurred caveolae, smaller pits and pale small vesicles localized next to the apical brush border of microvillus as well as coated vesicles, smooth surface vesicles and great vesicles were seen.
Destruction of villi and microvilli of the intestines by oral insulin containing biochemical addictives can lead to malabsorption of nutrients and persistent osmotic diarrhea, often accompanied by fever, as seen in celiac disease and Microvillus Inclusion disease, etc.
In studies from France, the United Kingdom, and the United States, other indications, such as intractable diarrhea, congenital microvillus, and Crohn's disease are included.
Each microvillus contains 20 structures called microfilaments, which function much like the poles supporting a tent.
In addition, Acroeimeria was reported to have endogenous stages, meronts, and gamonts developing at the microvillus zone of the host cell and enclosed within the microvillus boundary, extending above the intestinal mucosal surface.
It is the second death following sixyear-old Sameerah Ahmad, of Gillott Road, Edgbaston, who died at Birmingham Children's Hospital while infected with the virus on June 26, but was seriously ill with Microvillus Inclusion Disease affecting the lining of the small intestine.
A small pore is created in the vitelline layer, through which the sperm nuclear filament is extended to meet and fuse with an egg microvillus.