Results 181 to 190 of about 30,901 (212)

Dynamics of Immune Cell Microvilli

2023
Microvilli are actin-based microscopic membrane protrusions that are present in a wide variety of immune cells. Scanning electron microscopy (SEM) revealed that the T cell surface is covered by microvilli. Growing evidence shows that microvilli play important roles in T cell antigen detection and signal transduction.
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Scanning electron microscopy of intestinal microvilli

Journal of Microscopy, 1969
SUMMARYThe usual simple methods for the preparation of soft tissues for scanning electron microscopy failed to demonstrate the presence of microvilli on intestinal epithelial cells from rats. Treatment with a mucolytic agent or surface‐section methods also failed.
P F, Millington, D R, Critchley, P W, Tovell, R, Pearson   +3 more
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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 H, Temmink, J G, Collard
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Absorption characteristics of oriented photopigments in microvilli

Biological Cybernetics, 1976
We have analysed the effects of photopigment orientation in microvilli membranes on the absorption properties of rhabdomeres.
J N, Israelachvili, M, Wilson
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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.
N F, Wilson, W J, Snell
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Branching Microvilli in the Nasal Respiratory Epithelium

Archives of Otolaryngology - Head and Neck Surgery, 1978
In an ultrastructural study of the respiratory epithelial covering of 14 human nasal mucous polyps, some of the microvilli overlying the ciliated cells were shown to exhibit a complex form of branching with a resultant increase in surface area. This apparently original observation is of uncertain significance but is not of definite pathological ...
A, Busuttil, I A, More, D, McSeveney
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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.
S D, Carson, C A, Ramsey
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Fetal intestinal microvilli in human amniotic fluid

Prenatal Diagnosis, 1986
AbstractThe intestinal microvilli of fetal origin in human amniotic fluid were purified by Ca2+ precipitation of contaminating organelles followed by differential centrifugation of microvillar membranes. In the purified preparation, the specific activity of the microvillar marker‐enzymes maltase and sucrase increased about 77‐fold over that in cell ...
M, Potier, J, Cousineau, L, Michaud, M, Zolinger, S B, Melançon, L, Dallaire   +5 more
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Microvilli on the Outside of a Nematode

Nature, 1970
THE females of insect parasitic nematodes of the order Tylenchida are bizarre in form and live in the haemocoels of their hosts1–3. After the infective larva enters the haemocoel it usually moults, grows rapidly and becomes sexually mature. Its feeding apparatus quickly degenerates, the mouth and anus often disappear and if the intestine persists it ...
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Proteins of human placental microvilli: I. Cytoskeletal proteins

Placenta, 1986
Microvilli isolated from the syncytiotrophoblast surface of the human term placenta were separated into two fractions, one of which contained microvilli lacking a visible cytoskeleton on electron microscopy. One- and two-dimensional electrophoresis showed that a number of proteins were present in reduced amounts in the fraction lacking a visible core ...
P, Truman, H C, Ford
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