Association of the T-cell regulatory gene CTLA4 with susceptibility to autoimmune disease.

abstract：:The availability of methods for the amplification of nucleic acid sequences allows the genetic analysis in vitro of the structural and functional properties of many nucleic acids. We have now developed an in vitro selection and amplification system, and used it to analyse the self-splicing Tetrahymena ribozyme. A much...

journal_title：Nature

authors： Green R,Ellington AD,Szostak JW

更新日期：1990-09-27 00:00:00

abstract：:Seasonal influenza epidemics are a major public health concern, causing tens of millions of respiratory illnesses and 250,000 to 500,000 deaths worldwide each year. In addition to seasonal influenza, a new strain of influenza virus against which no previous immunity exists and that demonstrates human-to-human transmis...

journal_title：Nature

authors： Ginsberg J,Mohebbi MH,Patel RS,Brammer L,Smolinski MS,Brilliant L

更新日期：2009-02-19 00:00:00

abstract：:Muscle force is generated by myosin crossbridges interacting with actin. As estimated from stiffness and equatorial X-ray diffraction of muscle and muscle fibres, most myosin crossbridges are attached to actin during isometric contraction, but a much smaller fraction is bound stereospecifically. To determine the fract...

journal_title：Nature

authors： Bershitsky SY,Tsaturyan AK,Bershitskaya ON,Mashanov GI,Brown P,Burns R,Ferenczi MA

更新日期：1997-07-10 00:00:00

abstract：:We often face alternatives that we are free to choose between. Planning movements to select an alternative involves several areas in frontal and parietal cortex that are anatomically connected into long-range circuits. These areas must coordinate their activity to select a common movement goal, but how neural circuits...

journal_title：Nature

authors： Pesaran B,Nelson MJ,Andersen RA

更新日期：2008-05-15 00:00:00

abstract：:Some bacteria are capable of extracellular electron transfer, thereby enabling them to use electron acceptors and donors without direct cell contact. Beyond the micrometre scale, however, no firm evidence has previously existed that spatially segregated biogeochemical processes can be coupled by electric currents in n...

journal_title：Nature

authors： Nielsen LP,Risgaard-Petersen N,Fossing H,Christensen PB,Sayama M

更新日期：2010-02-25 00:00:00

abstract：:Polymeric matrices can be used to grow new tissues and organs, and the delivery of growth factors from these matrices is one method to regenerate tissues. A problem with engineering tissues that exist in a mechanically dynamic environment, such as bone, muscle and blood vessels, is that most drug delivery systems have...

journal_title：Nature

authors： Lee KY,Peters MC,Anderson KW,Mooney DJ

更新日期：2000-12-21 00:00:00

abstract：:Throughout the latter half of this century, the development and spread of resistance to most front-line antimalarial compounds used in the prevention and treatment of the most severe form of human malaria has given cause for grave clinical concern. Polymorphisms in pfmdr1, the gene encoding the P-glycoprotein homologu...

journal_title：Nature

authors： Reed MB,Saliba KJ,Caruana SR,Kirk K,Cowman AF

更新日期：2000-02-24 00:00:00

abstract：:In this Letter, 'released' should have been 'regulated' in the sentence starting: 'Deletion of Atg5 in the host similarly regulated circulating arginine and suppressed tumorigenesis...' This has been corrected online. ...

journal_title：Nature

authors： Poillet-Perez L,Xie X,Zhan L,Yang Y,Sharp DW,Hu ZS,Su X,Maganti A,Jiang C,Lu W,Zheng H,Bosenberg MW,Mehnert JM,Guo JY,Lattime E,Rabinowitz JD,White E

更新日期：2019-01-01 00:00:00

abstract：:The inner ear contains sensory epithelia that detect head movements, gravity and sound. It is unclear how to develop these sensory epithelia from pluripotent stem cells, a process that will be critical for modelling inner ear disorders or developing cell-based therapies for profound hearing loss and balance disorders....

journal_title：Nature

authors： Koehler KR,Mikosz AM,Molosh AI,Patel D,Hashino E

更新日期：2013-08-08 00:00:00

abstract：:Asteroids are primitive Solar System bodies that evolve both collisionally and through disruptions arising from rapid rotation. These processes can lead to the formation of binary asteroids and to the release of dust, both directly and, in some cases, through uncovering frozen volatiles. In a subset of the asteroids c...

journal_title：Nature

authors： Agarwal J,Jewitt D,Mutchler M,Weaver H,Larson S

更新日期：2017-09-20 00:00:00

abstract：:The induction of polyarthritis in rats by intradermal immunisation with homologous or heterologous type II collagen incomplete or incomplete Freund's adjuvant was reported recently by Trentham et al. We have now produced a similar disease in certain strains of mice. ...

journal_title：Nature

authors： Courtenay JS,Dallman MJ,Dayan AD,Martin A,Mosedale B

更新日期：1980-02-14 00:00:00

abstract：: ...

journal_title：Nature

authors： Ball P

更新日期：2018-12-01 00:00:00

abstract：:The neural substrates that the fruitfly Drosophila uses to sense smell, taste and light share marked structural and functional similarities with ours, providing attractive models to dissect sensory stimulus processing. Here we focus on two of the remaining and less understood prime sensory modalities: graviception and...

journal_title：Nature

authors： Kamikouchi A,Inagaki HK,Effertz T,Hendrich O,Fiala A,Göpfert MC,Ito K

更新日期：2009-03-12 00:00:00

abstract：:The enzyme isopenicillin N synthetase (IPS) catalyses the oxidative condensation of delta-(L-alpha-aminoadipyl)-L-cysteinyl-D-valine (LLD-ACV) to isopenicillin N, which is a central reaction in the pathway to clinically important penicillins and cephalosporins. Here we report the cloning, characterization and expressi...

journal_title：Nature

authors： Samson SM,Belagaje R,Blankenship DT,Chapman JL,Perry D,Skatrud PL,VanFrank RM,Abraham EP,Baldwin JE,Queener SW

更新日期：1985-11-14 00:00:00

abstract：:The human transcription factor Sp1 binds upstream of certain viral and cellular promoters and activates initiation of RNA synthesis from these promoters by RNA polymerase II. The Sp1 binding sites of both simian virus 40 and a related monkey promoter contain multiple copies of the sequence GGGCGG, three or four of the...

journal_title：Nature

authors： Gidoni D,Dynan WS,Tjian R

更新日期：1984-11-29 00:00:00

abstract：:During embryogenesis, body pattern is established in a stepwise process. After specification of the body axis, the embryo is subdivided into smaller units. Within these units, a diverse array of cell types is then generated. The subdivisions of the Drosophila embryo, called parasegments, are defined by the interface b...

journal_title：Nature

authors： Dougan S,DiNardo S

更新日期：1992-11-26 00:00:00

abstract：:Fireflies communicate with each other by emitting yellow-green to yellow-orange brilliant light. The bioluminescence reaction, which uses luciferin, Mg-ATP and molecular oxygen to yield an electronically excited oxyluciferin species, is carried out by the enzyme luciferase. Visible light is emitted during relaxation o...

journal_title：Nature

authors： Nakatsu T,Ichiyama S,Hiratake J,Saldanha A,Kobashi N,Sakata K,Kato H

更新日期：2006-03-16 00:00:00

abstract：:The ability to excise (repair) UV-induced pyrimidine dimers in Escherichia coli is not related to its ability to remove N-methyl-N'-nitro-N-nitrosoguanidine (MNNG)-induced O6-methylguanine (O6-MeG) from DNA. It was therefore surprising that certain xeroderma pigmentosum cell lines, deficient in dimer excision, were al...

journal_title：Nature

authors： Sklar R,Strauss B

更新日期：1981-01-29 00:00:00

abstract：:The human AIDS viruses human immunodeficiency virus type 1 (HIV-1) and type 2 (HIV-2) represent cross-species (zoonotic) infections. Although the primate reservoir of HIV-2 has been clearly identified as the sooty mangabey (Cercocebus atys), the origin of HIV-1 remains uncertain. Viruses related to HIV-1 have been iso...

journal_title：Nature

authors： Gao F,Bailes E,Robertson DL,Chen Y,Rodenburg CM,Michael SF,Cummins LB,Arthur LO,Peeters M,Shaw GM,Sharp PM,Hahn BH

更新日期：1999-02-04 00:00:00

abstract：:Researchers recognize that society needs accurate and comprehensive estimates of the economic value of rain forests to assess conservation and management options. Valuation of forests can help us to decide whether to implement policies that reconcile the value different groups attach to forests. Here we have measured ...

journal_title：Nature

authors： Godoy R,Wilkie D,Overman H,Cubas A,Cubas G,Demmer J,McSweeney K,Brokaw N

更新日期：2000-07-06 00:00:00

abstract：:The intestinal tract maintains proper function by replacing aged cells with freshly produced cells that arise from a population of self-renewing intestinal stem cells (ISCs). In the mammalian intestine, ISC self renewal, amplification and differentiation take place along the crypt-villus axis, and are controlled by th...

journal_title：Nature

authors： Takashima S,Mkrtchyan M,Younossi-Hartenstein A,Merriam JR,Hartenstein V

更新日期：2008-07-31 00:00:00

abstract：:Activation of the nuclear transcription factor NF-kappaB by inflammatory cytokines requires the successive action of NF-kappaB-inducing kinase (NIK) and an IKB-kinase (IKK) complex composed of IKKalpha and IKKbeta. Here we show that the Akt serine-threonine kinase is involved in the activation of NF-kappaB by tumour n...

journal_title：Nature

authors： Ozes ON,Mayo LD,Gustin JA,Pfeffer SR,Pfeffer LM,Donner DB

更新日期：1999-09-02 00:00:00

abstract：:High-energy cosmic-ray electrons and positrons (CREs), which lose energy quickly during their propagation, provide a probe of Galactic high-energy processes and may enable the observation of phenomena such as dark-matter particle annihilation or decay. The CRE spectrum has been measured directly up to approximately 2 ...

journal_title：Nature

authors： DAMPE Collaboration.

更新日期：2017-12-07 00:00:00

abstract：:Parkinson's disease is characterized by loss of dopamine neurons in the substantia nigra1. Similar to other major neurodegenerative disorders, there are no disease-modifying treatments for Parkinson's disease. While most treatment strategies aim to prevent neuronal loss or protect vulnerable neuronal circuits, a poten...

journal_title：Nature

authors： Qian H,Kang X,Hu J,Zhang D,Liang Z,Meng F,Zhang X,Xue Y,Maimon R,Dowdy SF,Devaraj NK,Zhou Z,Mobley WC,Cleveland DW,Fu XD

更新日期：2020-06-01 00:00:00

abstract：:Humoral immune responses to immunization and infection and susceptibilities to antibody-mediated autoimmunity are generally lower in males1-3. However, the mechanisms underlying such sexual dimorphism are not well understood. Here we show that there are intrinsic differences between the B cells that produce germinal c...

journal_title：Nature

authors： Zhao R,Chen X,Ma W,Zhang J,Guo J,Zhong X,Yao J,Sun J,Rubinfien J,Zhou X,Wang J,Qi H

更新日期：2020-01-01 00:00:00

abstract：:The mechanism of action of antisteroids is not understood and explanations of their antagonistic activity have been sought at all levels of hormone action. It has been proposed that antisteroids, after binding to receptor, trap it into a non-activated (non DNA-binding) form possibly through interaction with a heat-sho...

journal_title：Nature

authors： Guiochon-Mantel A,Loosfelt H,Ragot T,Bailly A,Atger M,Misrahi M,Perricaudet M,Milgrom E

更新日期：1988-12-15 00:00:00

abstract：:T cells recognize foreign proteins as peptides bound to self molecules encoded by the major histocompatibility complex (MHC). The kinetics of interaction between purified class II MHC molecules and peptides is unusual, in that the rate of association is very slow, but once formed, the complexes are extremely stable. T...

journal_title：Nature

authors： Adorini L,Appella E,Doria G,Cardinaux F,Nagy ZA

更新日期：1989-12-14 00:00:00

abstract：:The mechanism by which insulin regulates cellular metabolism remains unknown although indirect evidence suggests that alterations in intracellular calcium are important. More specifically, it has been proposed that insulin triggers an increase in intracellular calcium which is responsible for the subsequent modificati...

journal_title：Nature

authors： Pershadsingh HA,McDonald JM

更新日期：1979-10-11 00:00:00

abstract：:Cysticercosis caused by larval tapeworms is a major public health problem and a cause of substantial economic losses in the farm-animal industries. Taenia ovis in sheep is a particularly important example. Immunity to reinfection with the larvae has a central role in regulating natural transmission of the parasites, a...

journal_title：Nature

authors： Johnson KS,Harrison GB,Lightowlers MW,O'Hoy KL,Cougle WG,Dempster RP,Lawrence SB,Vinton JG,Heath DD,Rickard MD

更新日期：1989-04-13 00:00:00

abstract：:Experimental realization of a universal set of quantum logic gates is the central requirement for the implementation of a quantum computer. In an 'all-geometric' approach to quantum computation, the quantum gates are implemented using Berry phases and their non-Abelian extensions, holonomies, from geometric transforma...

journal_title：Nature

authors： Zu C,Wang WB,He L,Zhang WG,Dai CY,Wang F,Duan LM

更新日期：2014-10-02 00:00:00