Results 271 to 280 of about 520,160 (311)
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Journal of the American Chemical Society, 2009
A vesicle system is described that possesses a pH-induced "breathing" feature and consists of a three-layered wall structure. The "breathing" feature consists of a highly reversible vesicle volume change by a factor of ca. 7, accompanied by diffusion of species into and out of the vesicles with a relaxation time of ca. 1 min.
Shaoyong, Yu +3 more
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A vesicle system is described that possesses a pH-induced "breathing" feature and consists of a three-layered wall structure. The "breathing" feature consists of a highly reversible vesicle volume change by a factor of ca. 7, accompanied by diffusion of species into and out of the vesicles with a relaxation time of ca. 1 min.
Shaoyong, Yu +3 more
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On synaptic vesicles, complex vesicles and dense projections
Brain Research, 1970Observations support the view that in vertebrates synaptic vesicles are produced by liberation from complex vesicles, which in turn are derived from the membranes of the presynaptic bag. Some of the shell fragments of the complex vesicles remain in the bag, whereas other fragments of the shell adhere to the wall of the synaptic vesicle. It is suggested
E G, Gray, R A, Willis
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Vesicle-vesicle interactions in sonicated dispersions of dipalmitoylphosphatidylcholine
Biochemistry, 1981The time course of the size transformation of sonicated small unilamellar dipalmitoylphosphatidylcholine vesicles at 23 degrees C has been followed with (31)P and (1)H nuclear magnetic resonance (NMR) spectroscopy. Comparison of these results with turbidity measurements indicates that vesicle aggregation, monitored by turbidity, and size transformation,
C F, Schmidt +2 more
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Journal of Drug Targeting, 1994
Stable fluorinated vesicles--i.e. vesicles with a hydrophobic and lipophobic fluorinated film within their bilayer membranes--have been obtained from a variety of neutral, zwitterionic or anionic fluorinated amphiphiles, including single chain phosphocholine derivatives, double-chain phospholipids, glycolipids and glycophospholipids, as well as from ...
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Stable fluorinated vesicles--i.e. vesicles with a hydrophobic and lipophobic fluorinated film within their bilayer membranes--have been obtained from a variety of neutral, zwitterionic or anionic fluorinated amphiphiles, including single chain phosphocholine derivatives, double-chain phospholipids, glycolipids and glycophospholipids, as well as from ...
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Large vesicle contamination in small, unilamellar vesicles
Biochimica et Biophysica Acta (BBA) - Biomembranes, 1980Small, unilamellar phospholipid vesicles have been prepared using a new, high-powdered cup sonifier that avoids contact of the sample with a titanium probe. These vesicles have been characterized by gel filtration chromatography both before and after fractionation by high-speed centrifugation.
D A, Barrow, B R, Lentz
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Creating Functional Vesicle Assemblies from Vesicles and Nanoparticles
Pharmaceutical Research, 2009Vesicles (liposomes) have been shown to be excellent vehicles for drug delivery, yet assemblies of vesicles (vesicle aggregates) have been used infrequently in this context. However vesicle assemblies have useful properties not available to individual vesicles; their size can cause localisation in specific tissues and they can incorporate more ...
Mart, Robert J. +2 more
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2004
The ability of certain lipids to self-assemble in water as bilayers is crucial for the properties of the outer membrane of biological cells and many of their internal structures as well (Golgi apparatus, endosomes, lysosomes, ...). Usually we call a vesicle such a bilayer membrane forming a closed shape with both an inner and an outer aqueous ...
Cabuil, Valérie +3 more
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The ability of certain lipids to self-assemble in water as bilayers is crucial for the properties of the outer membrane of biological cells and many of their internal structures as well (Golgi apparatus, endosomes, lysosomes, ...). Usually we call a vesicle such a bilayer membrane forming a closed shape with both an inner and an outer aqueous ...
Cabuil, Valérie +3 more
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1984
Synaptic vesicles are the characteristic organelles of the presynaptic nerve terminals of chemical synapses (i.e., those utilizing the release of a specific chemical transmitter substance to bring about synaptic transmission). They are normally 45–50 nm in diameter and must be among the most homogeneous and uniform lipoprotein membrane organelles known.
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Synaptic vesicles are the characteristic organelles of the presynaptic nerve terminals of chemical synapses (i.e., those utilizing the release of a specific chemical transmitter substance to bring about synaptic transmission). They are normally 45–50 nm in diameter and must be among the most homogeneous and uniform lipoprotein membrane organelles known.
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The role of coated vesicles in recycling of synaptic vesicle membrane
Cell Biology International Reports, 1989The uptake of extracellular tracers into synaptic nerve terminals has been a phenomenon of persistent interest. Uptake is into synaptic vesicles, hence vesicles spend part of their life in continuity with the plasma membrane, as expected if exocytosis underlies the quantal discharge of neurotransmitters.
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Vesicles and Vesicle Fusion: Coarse-Grained Simulations
2012Biological cells are highly dynamic, and continually move material around their own volume and between their interior and exterior. Much of this transport encapsulates the material inside phospholipid vesicles that shuttle to and from, fusing with, and budding from, other membranes.
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