Loss of constitutional heterozygosity in colon carcinoma from patients with familial polyposis coli.

abstract：:Stimulation of transient increases in intracellular calcium (Cai2+) activates protein kinases, regulates transcription and influences motility and morphology. Developing neurons generate spontaneous Cai2+ transients, but their role in directing neuronal differentiation and the way in which they encode information are ...

journal_title：Nature

authors： Gu X,Spitzer NC

更新日期：1995-06-29 00:00:00

abstract：:Abiraterone blocks androgen synthesis and prolongs survival in patients with castration-resistant prostate cancer, which is otherwise driven by intratumoral androgen synthesis. Abiraterone is metabolized in patients to Δ(4)-abiraterone (D4A), which has even greater anti-tumour activity and is structurally similar to e...

journal_title：Nature

authors： Li Z,Alyamani M,Li J,Rogacki K,Abazeed M,Upadhyay SK,Balk SP,Taplin ME,Auchus RJ,Sharifi N

更新日期：2016-05-26 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：:Neurons expressing luteinizing hormone-releasing hormone (LHRH), found in the septal-preoptic nuclei and hypothalamus, control the release of gonadotropic hormones from the anterior pituitary gland and facilitate reproductive behaviour. LHRH-expressing neurons are also found in the nervus terminalis, a cranial nerve t...

journal_title：Nature

authors： Schwanzel-Fukuda M,Pfaff DW

更新日期：1989-03-09 00:00:00

abstract：:Circumstellar accretion disks transfer matter from molecular clouds to young stars and to the sites of planet formation. The disks observed around pre-main-sequence stars have properties consistent with those expected for the pre-solar nebula from which our own Solar System formed 4.5 Gyr ago. But the 'debris' disks t...

journal_title：Nature

authors： Thi WF,Blake GA,van Dishoeck EF,van Zadelhoff GJ,Horn JM,Becklin EE,Mannings V,Sargent AI,van Den Ancker ME,Natta A

更新日期：2001-01-04 00:00:00

abstract：:The four R-spondin secreted ligands (RSPO1-RSPO4) act via their cognate LGR4, LGR5 and LGR6 receptors to amplify WNT signalling1-3. Here we report an allelic series of recessive RSPO2 mutations in humans that cause tetra-amelia syndrome, which is characterized by lung aplasia and a total absence of the four limbs. Fun...

journal_title：Nature

authors： Szenker-Ravi E,Altunoglu U,Leushacke M,Bosso-Lefèvre C,Khatoo M,Thi Tran H,Naert T,Noelanders R,Hajamohideen A,Beneteau C,de Sousa SB,Karaman B,Latypova X,Başaran S,Yücel EB,Tan TT,Vlaminck L,Nayak SS,Shukla A,Giris

更新日期：2018-05-01 00:00:00

abstract：:The observed number counts of high-redshift galaxy candidates have been used to build up a statistical description of star-forming activity at redshift z ≳ 7, when galaxies reionized the Universe. Standard models predict that a high incidence of gravitational lensing will probably distort measurements of flux and numb...

journal_title：Nature

authors： Wyithe JS,Yan H,Windhorst RA,Mao S

更新日期：2011-01-13 00:00:00

abstract：:Red colobus are one of a small number of primate species in which females have been reported to transfer between breeding groups more commonly than males. Several authors have hypothesised that in such species transference may serve to reduce the risk to females of producing offspring of lower fitness through inbreedi...

journal_title：Nature

authors： Marsh CW

更新日期：1979-10-18 00:00:00

abstract：:The role of magnetic domains (and the walls between domains) in determining the electrical properties of ferromagnetic materials has been investigated in great detail for many years, not least because control over domains offers a means of manipulating electron spin to control charge transport in 'spintronic' devices....

journal_title：Nature

authors： Kummamuru RK,Soh YA

更新日期：2008-04-17 00:00:00

abstract：:Measuring the completeness of the fossil record is essential to understanding evolution over long timescales, particularly when comparing evolutionary patterns among biological groups with different preservational properties. Completeness measures have been presented for various groups based on gaps in the stratigraph...

journal_title：Nature

authors： Foote M,Sepkoski JJ Jr

更新日期：1999-04-01 00:00:00

abstract：:Established infections with the human and simian immunodeficiency viruses (HIV and SIV, respectively) are thought to be permanent with even the most effective immune responses and antiretroviral therapies only able to control, but not clear, these infections. Whether the residual virus that maintains these infections ...

journal_title：Nature

authors： Hansen SG,Piatak M Jr,Ventura AB,Hughes CM,Gilbride RM,Ford JC,Oswald K,Shoemaker R,Li Y,Lewis MS,Gilliam AN,Xu G,Whizin N,Burwitz BJ,Planer SL,Turner JM,Legasse AW,Axthelm MK,Nelson JA,Früh K,Sacha JB,Estes JD

更新日期：2013-10-03 00:00:00

abstract：:Phosphorylation of membrane components is thought to be an important process in membrane function. Phosphorylated proteins and a special class of phospholipids, the (poly)phosphoinositides (poly PI), are implicated in the regulation of membrane permeability and synaptic transmission in neurones. For many years, protei...

journal_title：Nature

authors： Jolles J,Zwiers H,van Dongen CJ,Schotman P,Wirtz KW,Gispen WH

更新日期：1980-08-07 00:00:00

abstract：:Recent studies have suggested that actomyosin threads may provide a useful model for studying the properties of contractile systems. The development of highly sensitive positional feedback transducers has enabled the properties of these threads to be measured reproducibly. Potential applications include such systems a...

journal_title：Nature

authors： Altringham JD,Yancey PH,Johnston IA

更新日期：1980-09-25 00:00:00

abstract：:Few intergalactic, plausibly primordial clouds of neutral atomic hydrogen (H(i)) have been found in the local Universe, suggesting that such structures have either dispersed, become ionized or produced a stellar population on gigayear timescales. The Leo ring, a massive (M(H(i)) approximately 1.8 x 10(9)M[symbol: see ...

journal_title：Nature

authors： Thilker DA,Donovan J,Schiminovich D,Bianchi L,Boissier S,de Paz AG,Madore BF,Martin DC,Seibert M

更新日期：2009-02-19 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：:T-cell clones that grow continuously in tissue culture have become a major tool for studying the properties of T lymphocytes. It is therefore important to know to what extent such clones resemble their normal counterparts. Several reports have appeared recently which demonstrate that long-term T-cell lines may lose th...

journal_title：Nature

authors： Simon MM,Weltzien HU,Bühring HJ,Eichmann K

更新日期：1984-03-22 00:00:00

abstract：:A family of G-protein-coupled chemoattractant receptors is known to mediate the transport and activation of neutrophils and macrophages This family includes receptors for chemokines, such as interleukin-8, bacterial formylated peptides, platelet-activating factor, leukotriene B4, and the complement anaphylatoxins. The...

journal_title：Nature

authors： Höpken UE,Lu B,Gerard NP,Gerard C

更新日期：1996-09-05 00:00:00

abstract：:Large-scale systematic sequencing has generally depended on the availability of an ordered library of large-insert bacterial or viral genomic clones for the organism under study. The generation of these large insert libraries, and the location of each clone on a genome map, is a laborious and time-consuming process. I...

journal_title：Nature

authors： Churcher C,Bowman S,Badcock K,Bankier A,Brown D,Chillingworth T,Connor R,Devlin K,Gentles S,Hamlin N,Harris D,Horsnell T,Hunt S,Jagels K,Jones M,Lye G,Moule S,Odell C,Pearson D,Rajandream M,Rice P,Rowley N,Ske

更新日期：1997-05-29 00:00:00

abstract：:Many-body systems in nature exhibit complexity and self-organization arising from seemingly simple laws. For example, the long-range Coulomb interaction between electrical charges has a simple form, yet is responsible for a plethora of bound states in matter, ranging from the hydrogen atom to complex biochemical struc...

journal_title：Nature

authors： Kaindl RA,Carnahan MA,Hägele D,Lövenich R,Chemla DS

更新日期：2003-06-12 00:00:00

abstract：:Using visual information to guide behaviour requires storage in a temporary buffer, known as visual short-term memory (VSTM), that sustains attended information across saccades and other visual interruptions. There is growing debate on whether VSTM capacity is limited to a fixed number of objects or whether it is vari...

journal_title：Nature

authors： Xu Y,Chun MM

更新日期：2006-03-02 00:00:00

abstract：:Endothelial cells adopt tissue-specific characteristics to instruct organ development and regeneration1,2. This adaptability is lost in cultured adult endothelial cells, which do not vascularize tissues in an organotypic manner. Here, we show that transient reactivation of the embryonic-restricted ETS variant transcri...

journal_title：Nature

authors： Palikuqi B,Nguyen DT,Li G,Schreiner R,Pellegata AF,Liu Y,Redmond D,Geng F,Lin Y,Gómez-Salinero JM,Yokoyama M,Zumbo P,Zhang T,Kunar B,Witherspoon M,Han T,Tedeschi AM,Scottoni F,Lipkin SM,Dow L,Elemento O,Xiang JZ

更新日期：2020-09-01 00:00:00

abstract：:The visual system analyses information by decomposing complex objects into simple components (visual features) that are widely distributed across the cortex. When several objects are present simultaneously in the visual field, a mechanism is required to group (bind) together visual features that belong to each object ...

journal_title：Nature

authors： Usher M,Donnelly N

更新日期：1998-07-09 00:00:00

abstract：: ...

journal_title：Nature

authors： Clayton EW

更新日期：2018-12-01 00:00:00

abstract：:Because their molecular signatures are often prominent in extracts of sediments, bacteria are thought to be important contributors to petroleum source beds. It has been shown recently, however, that abundances of biomarkers do not always reflect relative contributions to sedimentary organic carbon (Corg). The contrib...

journal_title：Nature

authors： Hartgers WA,Sinninghe Damste JS,Requejo AG,Allan J,Hayes JM,de Leeuw JW

更新日期：1994-05-19 00:00:00

abstract：:The intracellular pathogen Legionella pneumophila modulates the activity of host GTPases to direct the transport and assembly of the membrane-bound compartment in which it resides. In vitro studies have indicated that the Legionella protein DrrA post-translationally modifies the GTPase Rab1 by a process called AMPylat...

journal_title：Nature

authors： Mukherjee S,Liu X,Arasaki K,McDonough J,Galán JE,Roy CR

更新日期：2011-08-07 00:00:00

abstract：:Abyssal-hill-bounding faults that pervade the oceanic crust are the most common tectonic feature on the surface of the Earth. The recognition that these faults form at plate spreading centres came with the plate tectonic revolution. Recent observations reveal a large range of fault sizes and orientations; numerical mo...

journal_title：Nature

authors： Buck WR,Lavier LL,Poliakov AN

更新日期：2005-04-07 00:00:00

abstract：:The ability of collapsing (cavitating) bubbles to focus and concentrate energy, forces and stresses is at the root of phenomena such as cavitation damage, sonochemistry or sonoluminescence. In a biomedical context, ultrasound-driven microbubbles have been used to enhance contrast in ultrasonic images. The observation ...

journal_title：Nature

authors： Marmottant P,Hilgenfeldt S

更新日期：2003-05-08 00:00:00

abstract：:In obesity and type 2 diabetes, expression of the GLUT4 glucose transporter is decreased selectively in adipocytes. Adipose-specific Glut4 (also known as Slc2a4) knockout (adipose-Glut4(-/-)) mice show insulin resistance secondarily in muscle and liver. Here we show, using DNA arrays, that expression of retinol bindin...

journal_title：Nature

authors： Yang Q,Graham TE,Mody N,Preitner F,Peroni OD,Zabolotny JM,Kotani K,Quadro L,Kahn BB

更新日期：2005-07-21 00:00:00

abstract：:Sex chromosomes in males of most eutherian mammals share only a small homologous segment, the pseudoautosomal region (PAR), in which the formation of double-strand breaks (DSBs), pairing and crossing over must occur for correct meiotic segregation1,2. How cells ensure that recombination occurs in the PAR is unknown. H...

journal_title：Nature

authors： Acquaviva L,Boekhout M,Karasu ME,Brick K,Pratto F,Li T,van Overbeek M,Kauppi L,Camerini-Otero RD,Jasin M,Keeney S

更新日期：2020-06-01 00:00:00

abstract：:Inherited genetic variation has a critical but as yet largely uncharacterized role in human disease. Here we report a public database of common variation in the human genome: more than one million single nucleotide polymorphisms (SNPs) for which accurate and complete genotypes have been obtained in 269 DNA samples fro...

journal_title：Nature

authors： International HapMap Consortium.

更新日期：2005-10-27 00:00:00