Search Results - "RUBEN, G. C"

Cell-free DNA in human blood plasma : Length measurements in patients with pancreatic cancer and healthy controls by GIACONA, M. B, RUBEN, G. C, ICZKOWSKI, K. A, ROOS, T. B, PORTER, D. M, SORENSON, G. D

“…The amount of non-cell-associated DNA free in blood plasma from pancreatic cancer patients usually exceeds that from healthy donors. We have evaluated the…”
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Basement Membrane Structure in situ: Evidence for Lateral Associations in the Type IV Collagen Network by Yurchenco, Peter D., Ruben, George C.

“…To determine molecular architecture of the type IV collagen network in situ, the human amniotic basement membrane has been studied en face in stereo relief by…”
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Type IV collagen lateral associations in the EHS tumor matrix. Comparison with amniotic and in vitro networks by Yurchenco, PD, Ruben, GC

“…The macromolecular structural organization of the type IV collagen network in the extracellular matrix of the EHS tumor has been investigated using a…”
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The microtubule-associated protein tau forms a triple-stranded left-hand helical polymer by G C Ruben, K Iqbal, I Grundke-Iqbal, H M Wisniewski, T L Ciardelli, J E Johnson, Jr

“…High resolution transmission electron microscopy (TEM) has shown that bovine tau are 2.1 +/- 0.2-nm diameter filaments which are triple-stranded left-hand…”
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DNA bound to polypyrrole films: high-resolution imaging, DNA binding kinetics and internal migration by Pande, Rajiv, Ruben, George C., Lim, Jeong Ok, Tripathy, Sukant, Marx, Kenneth A.

“…We have studied the time-dependent uptake of 35S radiolabeled DNA with electrochemically prepared polypyrrole films. The two distinct polypyrrole film…”
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Self-assembly of a high molecular weight basement membrane heparan sulfate proteoglycan into dimers and oligomers by Yurchenco, P D, Cheng, Y S, Ruben, G C

“…A high molecular weight basement membrane heparan sulfate proteoglycan, isolated from murine Englebreth-Holm-Swarm tumor, is seen in platinum replicas as an…”
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Imaging aerogels at the molecular level by RUBEN, G. C, PEKALA, R. W, TILLOTSON, T. M, HRUBESH, L. W

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Alzheimer paired helical filaments, untreated and pronase digested, studied by vertical platinum-carbon replication and high resolution transmission electron microscopy by Ruben, George C., Novak, Michal, Edwards, Patricia C., Iqbal, Khalid

“…Untreated paired helical filaments (PHF) and pronase treated PHF filaments have been steroscopically imaged with a freeze-drying vertical platinum-carbon…”
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Evidence for Helical Structures in Poly(1-Olefin Sulfones) by Transmission Electron Microscopy by Ruben, George C., Stockmayer, W. H.

“…Transmission electron microscope images were obtained of fractions of poly(1-tetradecene sulfone) and poly(cyclohexene sulfone) cast from very dilute solutions…”
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The organization of the microtubule associated protein tau in Alzheimer paired helical filaments by Ruben, G C, Iqbal, K, Grundke-Iqbal, I, Johnson, Jr, J E

“…The structural relationship of the microtubule associated protein tau to paired helical filaments (PHF) was examined by high resolution transmission electron…”
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Electron microscopic studies of free and proteinase-bound duck ovostatins (ovomacroglobulins). Model of ovostatin structure and its transformation upon proteolysis by Ruben, G C, Harris, E D, Nagase, H

“…Conformational changes of duck ovostatin (ovomacroglobulin) upon complexing with thermolysin have been studied by electron microscopy. Both free and…”
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Formation of UHMWPE polymeric transfer films on sliding glass counterfaces : early and steady-state wear studied by transmission electron microscopy by RUBEN, G. C, BLANCHET, T. A, KENNEDY, F. E

“…At a temperature of 30 degree C polymeric transfer films were generated on glass counterfaces during small-amplitude oscillatory sliding contact with an…”
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Secondary structure of proteins associated in thin films by Safar, J, Roller, P P, Ruben, G C, Gajdusek, D C, Gibbs, Jr, C J

“…The solid state secondary structure of myoglobin, RNase A, concanavalin A (Con A), poly(L-lysine), and two linear heterooligomeric peptides were examined by…”
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Vertical Pt–C Replication for TEM, A Revolution in Imaging Non-Periodic Macromolecules, Biological Gels and Low-Density Polymer Networks by Ruben, George C.

“…Vertical replication for TEM is ideal for studying non-periodic specimens from 0.7 to 3 nm, a resolution mid-range difficult to attain by any other technique…”
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The Iso-Competition Point, a New Concept for Characterizing Multivalent versus Monovalent Counterion Competition, Successfully Describes Cation Binding to DNA by Ruben, George C.

“…Counterion condensation theory has a long and successful record of explaining the experimental and simulated data obtained for polymer polyelectrolytes and…”
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Solvent Effects on the C13 Chemical Shift of the Carbonyl Group of Acetone by Maciel, Gary E, Ruben, G. C

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High resolution transmission electron microscopy nanostructure of condensed-silica aerogels by Ruben, George C., Hrubesh, L.W., Tillotson, T.M.

“…High resolution transmission electron microscopy (HRTEM) was used to study the morphology of ultralow-density transparent condensed-silica (CS) aerogels…”
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Alzheimer disease hyperphosphorylated tau aggregates hydrophobically by Ruben, George C., Ciardelli, Thomas L., Grundke-Iqbal, Inge, Iqbal, Khalid

“…The chemical interaction that condenses the hyperphosphorylated protein tau in Alzheimer's disease (AD P‐tau) into neurofibrillary tangles and cripples…”
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Ultrathin (1 nm) vertically shadowed platinum-carbon replicas for imaging individual molecules in freeze-etched biological DNA and material science metal and plastic specimens by Ruben, G C

“…Single molecule resolution in beam-sensitive, uncoated, noncrystalline materials has heretofore not been possible except in thin (less than or equal to 150 A)…”
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Quantification of particle sizes with metal replication under standard freeze-etching conditions: a gold ball standard for calibrating shadow widths was used to measure freeze-etched globular proteins by Ruben, G C

“…The real size of platinum-carbon (Pt-C) replicated particles is not directly equivalent to either its metal-coated diameter or its shadow width. This paper…”
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