Perfusion chromatography.

abstract：:Werner's syndrome (WS) is a rare autosomal recessive disease in which the affected individuals display symptoms of premature ageing. The substantial phenotypic overlap between WS and normal ageing indicates that these two conditions may have pathogenetic mechanisms in common. The WS mutation has pleiotropic effects, a...

journal_title：Nature

authors： Goto M,Rubenstein M,Weber J,Woods K,Drayna D

更新日期：1992-02-20 00:00:00

abstract：:The dispute among federal agencies over regulation of commercial biotechnology has been addressed in the Federal Register by the Office of Science and Technology Policy (OSTP), which says the Recombinant DNA Advisory Committee of the National Institutes of Health should continue to oversee biomedical research in this ...

journal_title：Nature

authors： Beardsley T

更新日期：1985-01-10 00:00:00

abstract：:The lack of a reliable theory of glass physics has led to the pursuit of correlations between various glass or viscous liquid parameters, one of which is the slope m of the plot of log(viscosity) against Tg/T, extrapolated at the glass-transition temperature, Tg, also termed 'fragility'. Novikov and Sokolov conclude t...

journal_title：Nature

authors： Yannopoulos SN,Johari GP

更新日期：2006-08-03 00:00:00

abstract：:Cells sense the context in which they grow to adapt their phenotype and allow multicellular patterning by mechanisms of autocrine and paracrine signalling. However, patterns also form in cell populations exposed to the same signalling molecules and substratum, which often correlate with specific features of the popula...

journal_title：Nature

authors： Frechin M,Stoeger T,Daetwyler S,Gehin C,Battich N,Damm EM,Stergiou L,Riezman H,Pelkmans L

更新日期：2015-07-02 00:00:00

abstract：:Language is a uniquely human ability that evolved at some point in the roughly 6,000,000 years since human and chimpanzee lines diverged. Even in the most linguistically impoverished environments, children naturally develop sophisticated language systems. In contrast, reading is a learnt skill that does not develop wi...

journal_title：Nature

authors： Carreiras M,Seghier ML,Baquero S,Estévez A,Lozano A,Devlin JT,Price CJ

更新日期：2009-10-15 00:00:00

abstract：:Aquaporin (AQP) water-channel proteins are freely permeated by water but not by ions or charged solutes. Although mammalian aquaporins were believed to be located in plasma membranes, rat AQP6 is restricted to intracellular vesicles in renal epithelia. Here we show that AQP6 is functionally distinct from other known a...

journal_title：Nature

authors： Yasui M,Hazama A,Kwon TH,Nielsen S,Guggino WB,Agre P

更新日期：1999-11-11 00:00:00

abstract：:Although the nuclear properties of the late actinides (plutonium, americium and curium) are fully understood and widely applied to energy generation, their solid-state properties do not fit within standard models and are the subject of active research. Plutonium displays phases with enormous volume differences, and bo...

journal_title：Nature

authors： Shim JH,Haule K,Kotliar G

更新日期：2007-03-29 00:00:00

abstract：:Interfacing a single photon with another quantum system is a key capability in modern quantum information science. It allows quantum states of matter, such as spin states of atoms, atomic ensembles or solids, to be prepared and manipulated by photon counting and, in particular, to be distributed over long distances. S...

journal_title：Nature

authors： Riedinger R,Hong S,Norte RA,Slater JA,Shang J,Krause AG,Anant V,Aspelmeyer M,Gröblacher S

更新日期：2016-02-18 00:00:00

abstract：:Self-incompatibility in flowering plants is often controlled by a single nuclear gene (the S-gene) having several alleles. This gene prevents fertilization by self-pollen or by pollen bearing either of the two S-alleles expressed in the style. Sequence analysis shows that three alleles of the S gene of Nicotiana alata...

journal_title：Nature

authors： McClure BA,Haring V,Ebert PR,Anderson MA,Simpson RJ,Sakiyama F,Clarke AE

更新日期：1989-12-21 00:00:00

abstract：:A mutant form of the alpha-isoform of protein kinase C (PKC) was recently isolated from an ultraviolet radiation-induced murine fibrosarcoma cell line and reported to transform mouse BALB/c 3T3 fibroblasts on transfection. Four point mutations in the regulatory domain were assumed to be responsible for its oncogenicit...

journal_title：Nature

authors： Borner C,Filipuzzi I,Weinstein IB,Imber R

更新日期：1991-09-05 00:00:00

abstract：:Gravitational lensing is a powerful tool for the study of the distribution of dark matter in the Universe. The cold-dark-matter model of the formation of large-scale structures (that is, clusters of galaxies and even larger assemblies) predicts the existence of quasars gravitationally lensed by concentrations of dark ...

journal_title：Nature

authors： Inada N,Oguri M,Pindor B,Hennawi JF,Chiu K,Zheng W,Ichikawa S,Gregg MD,Becker RH,Suto Y,Strauss MA,Turner EL,Keeton CR,Annis J,Castander FJ,Eisenstein DJ,Frieman JA,Fukugita M,Gunn JE,Johnston DE,Kent SM,Nichol

更新日期：2003-12-18 00:00:00

abstract：:Despite tremendous efforts, development of an effective vaccine against human immunodeficiency virus (HIV) has proved an elusive goal. Recently, however, numerous antibodies have been identified that are capable of neutralizing most circulating HIV strains. These antibodies all exhibit an unusually high level of somat...

journal_title：Nature

authors： Balazs AB,Chen J,Hong CM,Rao DS,Yang L,Baltimore D

更新日期：2011-11-30 00:00:00

abstract：:A single base-pair mutation (beta s) in codon 6 of the human beta-globin gene, causing a single amino-acid substitution, is the cause of sickle cell anaemia. The mutant haemoglobin molecule, HbS, polymerizes when deoxygenated and causes deformation of the erythrocytes to a characteristic 'sickled' shape. Sickling of c...

journal_title：Nature

authors： Greaves DR,Fraser P,Vidal MA,Hedges MJ,Ropers D,Luzzatto L,Grosveld F

更新日期：1990-01-11 00:00:00

abstract：:Tumour necrosis factor-alpha (TNF-alpha) is a potent pro-inflammatory and immunomodulatory cytokine implicated in inflammatory conditions such as rheumatoid arthritis, Crohn's disease, multiple sclerosis and the cachexia associated with cancer or human immunodeficiency virus infection. TNF-alpha is initially expressed...

journal_title：Nature

authors： Gearing AJ,Beckett P,Christodoulou M,Churchill M,Clements J,Davidson AH,Drummond AH,Galloway WA,Gilbert R,Gordon JL

更新日期：1994-08-18 00:00:00

abstract：:The tumour necrosis factor (TNF) ligand TALL-1 and its cognate receptors, BCMA, TACI and BAFF-R, were recently identified as members of the TNF superfamily, which are essential factors contributing to B-cell maturation. The functional, soluble fragment of TALL-1 (sTALL-1) forms a virus-like assembly for its proper fun...

journal_title：Nature

authors： Liu Y,Hong X,Kappler J,Jiang L,Zhang R,Xu L,Pan CH,Martin WE,Murphy RC,Shu HB,Dai S,Zhang G

更新日期：2003-05-01 00:00:00

abstract：:Acyclovir (9-[2-hydroxyethoxymethyl]guanine or ACV) is a nucleoside analogue with considerable potential for the treatment of herpes simplex virus (HSV) infections in man. Two virus-coded enzymes are important in the mechanism of action of this drug: thymidine kinase (TK) which initiates its activation by converting i...

journal_title：Nature

authors： Darby G,Field HJ,Salisbury SA

更新日期：1981-01-01 00:00:00

abstract：:Cyclic GMP-AMP synthase (cGAS) is an innate immune sensor for cytosolic microbial DNA1. After binding DNA, cGAS synthesizes the messenger 2'3'-cyclic GMP-AMP (cGAMP)2-4, which triggers cell-autonomous defence and the production of type I interferons and pro-inflammatory cytokines via the activation of STING5. In addit...

journal_title：Nature

authors： Michalski S,de Oliveira Mann CC,Stafford CA,Witte G,Bartho J,Lammens K,Hornung V,Hopfner KP

更新日期：2020-11-01 00:00:00

abstract：:Certain cell fate decisions are specified by cell-cell interactions during the development of the nematode Caenorhabditis elegans. For example, in a wild-type hermaphrodite gonad, two cells, Z1.ppp and Z4.aaa, have the potential to become the anchor cell (AC). Intercellular communication establishes their fates and en...

journal_title：Nature

authors： Greenwald I,Seydoux G

更新日期：1990-07-12 00:00:00

abstract：:The X-ray structure of a pentameric ligand-gated ion channel from Erwinia chrysanthemi (ELIC) has recently provided structural insight into this family of ion channels at high resolution. The structure shows a homo-pentameric protein with a barrel-stave architecture that defines an ion-conduction pore located on the f...

journal_title：Nature

authors： Hilf RJ,Dutzler R

更新日期：2009-01-01 00:00:00

abstract：:Primordial germ cells (PGCs) are first identifiable as a population of about eight alkaline phosphatase-positive cells in the 7.0 days postcoitum mouse embryo. During the next 6 days of development they proliferate to give rise to the 25,000 cells that will establish the meiotic population. Steel factor is required fo...

journal_title：Nature

authors： Resnick JL,Bixler LS,Cheng L,Donovan PJ

更新日期：1992-10-08 00:00:00

abstract：:The fundus of the guinea-pig stomach actively dilates in response to low increases in intragastric pressure. This physiological response, now called adaptive relaxation, accommodates the intake of liquid or food. It is independent of external innervation, resistant to ganglion blockade, but reflex in origin. The nerve...

journal_title：Nature

authors： Desai KM,Sessa WC,Vane JR

更新日期：1991-06-06 00:00:00

abstract：:Grid cells provide a neural representation of space, by discharging when an animal traverses through the vertices of a periodic hexagonal grid spanning the environment. Although grid cells have been characterized in detail in rats, the fundamental question of what neural dynamics give rise to the grid structure remain...

journal_title：Nature

authors： Yartsev MM,Witter MP,Ulanovsky N

更新日期：2011-11-02 00:00:00

abstract：:Homeostasis is a biological principle for regulation of essential physiological parameters within a set range. Behavioural responses due to deviation from homeostasis are critical for survival, but motivational processes engaged by physiological need states are incompletely understood. We examined motivational charact...

journal_title：Nature

authors： Betley JN,Xu S,Cao ZFH,Gong R,Magnus CJ,Yu Y,Sternson SM

更新日期：2015-05-14 00:00:00

abstract：:Salmonella enterica serovar Typhi (S. Typhi) differs from most other salmonellae in that it causes a life-threatening systemic infection known as typhoid fever. The molecular bases for its unique clinical presentation are unknown. Here we find that the systemic administration of typhoid toxin, a unique virulence facto...

journal_title：Nature

authors： Song J,Gao X,Galán JE

更新日期：2013-07-18 00:00:00

abstract：:For plants, the sensing of light in the environment is as important as vision is for animals. Fluctuations in light can be crucial to competition and survival. One way plants sense light is through the phytochromes, a small family of diverse photochromic protein photoreceptors whose origins have been traced to the pho...

journal_title：Nature

authors： Smith H

更新日期：2000-10-05 00:00:00

abstract：:Despite the introduction of antiproliferative drug-eluting stents, coronary heart disease remains the leading cause of death in the United States. In-stent restenosis and bypass graft failure are characterized by excessive smooth muscle cell (SMC) proliferation and concomitant myointima formation with luminal oblitera...

journal_title：Nature

authors： Deuse T,Hua X,Wang D,Maegdefessel L,Heeren J,Scheja L,Bolaños JP,Rakovic A,Spin JM,Stubbendorff M,Ikeno F,Länger F,Zeller T,Schulte-Uentrop L,Stoehr A,Itagaki R,Haddad F,Eschenhagen T,Blankenberg S,Kiefmann R,Reic

更新日期：2014-05-29 00:00:00

abstract：:The discovery of the basis of genetic variation has opened inroads to understanding our history as a species. It has revealed the remarkable genetic similarity we share with other individuals as well as with our closest primate relatives. To understand what make us unique, both as individuals and as a species, we need...

journal_title：Nature

authors： Pääbo S

更新日期：2003-01-23 00:00:00

abstract：:Neuroectoderm cells in the cortical ventricular zone generate many diverse cell types, maintain the ventricular zone during embryonic life and create another germinal layer, the subventricular zone, which persists into adulthood. In other vertebrate tissues, including skin, intestine, blood and neural crest, stem cell...

journal_title：Nature

authors： Davis AA,Temple S

更新日期：1994-11-17 00:00:00

abstract：:Relative motion is one of the most salient cues for segmentation of a visual scene into separate objects. This is illustrated by the vivid contours that are perceived when random dot patterns move in different directions. Once motion is halted in such displays the segmentation contours disappear. This makes random dot...

journal_title：Nature

authors： Lamme VA,van Dijk BW,Spekreijse H

更新日期：1993-06-10 00:00:00

abstract：:Quantum computation, a paradigm of computing that is completely different from classical methods, benefits from theoretically proved speed-ups for certain problems and can be used to study the properties of quantum systems1. Yet, because of the inherently fragile nature of the physical computing elements (qubits), ach...

journal_title：Nature

authors： Kandala A,Temme K,Córcoles AD,Mezzacapo A,Chow JM,Gambetta JM

更新日期：2019-03-01 00:00:00