Results 151 to 160 of about 55,634 (166)

The role of microvilli in the agglutination of cells by concanavalin A

Experimental Cell Research, 1977
Abstract Morphological correlates of lectin agglutinability were examined in eight cell lines of varying sensitivity to agglutination by concanavalin A (ConA). The number of microvilli on the surface of cells growing in monolayers was positively correlated with agglutinability.
Ukena, T E, Karnovsky, M J
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A comparison of intestinal microvilli in bumblebees

Ethology Ecology & Evolution, 1991
The midgut in sexuals and workers of Bombus terrestris (L.), in fertile females of Megabombus ruderatus (Fab.) and workers of M. pascuorum (Scop.) and M. sylvarum (L.) has been observed with TEM and SEM. Epithelial cells were bordered with apically tapered, unusually long, and thickly packed microvilli, whose length reached 15 μm in B. terrestris males
MANINO, Aulo, PATETTA, Augusto
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Tissue factor (coagulation factor III) is present in placental microvilli and cofractionates with microvilli membrane proteins

Placenta, 1985
We have demonstrated that tissue factor is present in preparations of placental microvilli. The similarity of the procoagulant activities of microvilli and placental homogenates indicate that tissue factor is neither deficient nor enriched in microvilli relative to the bulk of placental tissue.
Steven D. Carson, Catherine A. Ramsey
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Cell surface microvilli and cell agglutinability

Cell Biology International Reports, 1977
Detached cells of some transformed mouse fibroblast lines have a villous surface whereas similarly treated cells of other lines are relatively smooth. These differences in surface morphology of detached cells are not reflected in their agglutinability with ConA and they cannot unambigously be explained from their morphology in situ.
J.G. Collard, J.H.M. Temmink
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Branching of Microvilli in the Human Conjunctival Epithelium

Archives of Ophthalmology, 1980
Biopsy specimens were obtained from the upper tarsal and limbal conjunctivae of ten normal persons and from the upper tarsal conjunctivae of five asymptomatic contact lens wearers and five patients with giant papillary conjunctivitis (GPC) associated with contact lens wear.
Mathea R. Allansmith, Donald R. Korb, Jack V. Greiner, Leonard Gladstone, Henry I. Covington, Thomas A. Weidman   +5 more
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Preferential distribution of surface immunoglobulins on microvilli [PDF]

Nature, 1978
MOST lymphocyte surface molecules including surface immunoglobulin (s-Ig) are mobile and essentially randomly dispersed in the plane of the membrane (reviewed in ref. 1). It has been recently shown, however, that a spontaneous non-uniform redistribution of surface molecules such as s-Ig (ref.
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Microvilli and cell-cell fusion during fertilization

Trends in Cell Biology, 1998
A number of fundamental biological processes, ranging from fertilization and embryonic development to viral infections, depend upon a complex interplay between cells that results in the fusion of their plasma membranes. Surprisingly, the cellular and molecular mechanisms underlying cell-cell fusion remain largely unknown.
Nedra F. Wilson, William J. Snell
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Effect of fasting on rat duodenal and jejunal microvilli

Clinical Nutrition, 2001
Duodenal and jejunal ultrastructural morphology and total serum alkaline phosphatase (ALP) activity were investigated in Wistar rats submitted to normal feeding, a 24 h fasting without or with access to sawdust or expanded polystyrene, and a 22 h fasting followed by a 2 h refeeding.
Maria João Martins, Isabel Azevedo, C. Hipólito-Reis   +2 more
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Loss and regeneration of the microvilli of human placental syncytiotrophoblast

Archives of Gynecology, 1987
In order to explore the functional role of microvilli of the syncytiotrophoblast of the human full-term placenta, 16 placentas were examined by scanning electron microscopy (SEM). Our results showed that the microvilli projecting from the apical portion of the syncytiotrophoblast appeared to be highly pleomorphic and showed regional variations in their
M. E. A. Ibrahim, A. G. H. Al-Zuhair, S. Mughal, M. A. Abdulla   +3 more
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A hydrodynamic mechanosensory hypothesis for brush border microvilli

American Journal of Physiology-Renal Physiology, 2000
In the proximal tubule of the kidney, Na+ and HCO3 − reabsorption vary proportionally with changes in axial flow rate. This feature is a critical component of glomerulotubular balance, but the basic mechanism by which the tubule epithelial cells sense axial flow remains unexplained.
Alan M. Weinstein, Sheldon Weinbaum, Peng Guo   +2 more
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