Biomechanics: rubber bands reduce the cost of carrying loads.

abstract：:Surgical sectioning of the corpus callosum in epileptic patients has provided a unique opportunity to study separately the competence and processing capacities of the two cerebral hemispheres, each of which is able to perceive, think, memorize and learn independently and essentially outside the realm of awareness of t...

journal_title：Nature

authors： Sergent J

更新日期：1983-10-27 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：:When simian virus 40 (SV40) infects host cells, the viral genes are expressed in two phases. Early in infection, the virus genome is transcribed and translated to yield two related proteins, 'large T' and 'small t' antigens. Later the rate of synthesis of the early messenger RNA falls and the viral genes coding for th...

journal_title：Nature

authors： McKay R,DiMaio D

更新日期：1981-02-26 00:00:00

abstract：:The cartilage and skin of animals, which are made up of more than fifty per cent water, are rather stiff (having elastic moduli of up to 100 megapascals) as well as tough and hard to break (with fracture energies of up to 9,000 joules per square metre). Such features make these biological materials mechanically superi...

journal_title：Nature

authors： Rauner N,Meuris M,Zoric M,Tiller JC

更新日期：2017-03-16 00:00:00

abstract：:Coherent light sources can be used to manipulate the outcome of light-matter interactions by exploiting interference phenomena in the time and frequency domain. A powerful tool in this emerging field of 'quantum control' is the adaptive shaping of femtosecond laser pulses, resulting, for instance, in selective molecul...

journal_title：Nature

authors： Brixner T,Damrauer NH,Niklaus P,Gerber G

更新日期：2001-11-01 00:00:00

abstract：:Schistosoma japonicum is a parasitic flatworm that causes human schistosomiasis, which is a significant cause of morbidity in China and the Philippines. Here we present a draft genomic sequence for the worm. The genome provides a global insight into the molecular architecture and host interaction of this complex metaz...

journal_title：Nature

authors： Schistosoma japonicum Genome Sequencing and Functional Analysis Consortium.

更新日期：2009-07-16 00:00:00

abstract：:Multiple sclerosis is commonly associated with a local humoral immune response within the central nervous system. A hallmark of this intrathecal response is the presence of electrophoretically demonstrable oligoclonal bands of IgG in the cerebrospinal fluid (CSF) of up to 95% of patients. Observations indicating that ...

journal_title：Nature

authors： Vandvik B,Norrby E

更新日期：1989-04-27 00:00:00

abstract：:The RIG-like helicase (RLH) family of intracellular receptors detect viral nucleic acid and signal through the mitochondrial antiviral signalling adaptor MAVS (also known as Cardif, VISA and IPS-1) during a viral infection. MAVS activation leads to the rapid production of antiviral cytokines, including type 1 interfer...

journal_title：Nature

authors： Moore CB,Bergstralh DT,Duncan JA,Lei Y,Morrison TE,Zimmermann AG,Accavitti-Loper MA,Madden VJ,Sun L,Ye Z,Lich JD,Heise MT,Chen Z,Ting JP

更新日期：2008-01-31 00:00:00

abstract：:The widespread reorganization of cellular architecture in mitosis is achieved through extensive protein phosphorylation, driven by the coordinated activation of a mitotic kinase network and repression of counteracting phosphatases. Phosphatase activity must subsequently be restored to promote mitotic exit. Although Cd...

journal_title：Nature

authors： Grallert A,Boke E,Hagting A,Hodgson B,Connolly Y,Griffiths JR,Smith DL,Pines J,Hagan IM

更新日期：2015-01-01 00:00:00

abstract：:Naive T lymphocytes travel to T-cell areas of secondary lymphoid organs in search of antigen presented by dendritic cells. Once activated, they proliferate vigorously, generating effector cells that can migrate to B-cell areas or to inflamed tissues. A fraction of primed T lymphocytes persists as circulating memory ce...

journal_title：Nature

authors： Sallusto F,Lenig D,Förster R,Lipp M,Lanzavecchia A

更新日期：1999-10-14 00:00:00

abstract：:Structural fluctuations in proteins on the picosecond timescale have been studied in considerable detail by theoretical methods such as molecular dynamics simulation, but there exist very few experimental data with which to test the conclusions. We have used the technique of inelastic neutron scattering to investigate...

journal_title：Nature

authors： Doster W,Cusack S,Petry W

更新日期：1989-02-23 00:00:00

abstract：:For parallel computers to simulate our brains, we must face the fact that human beings have a better claim on the title Homo seriatim than Homo sapiens--we're more consistently serial than wise. ...

journal_title：Nature

authors： Calvin WH

更新日期：1987-11-05 00:00:00

abstract：:Sea ice and dust flux increased greatly in the Southern Ocean during the last glacial period. Palaeorecords provide contradictory evidence about marine productivity in this region, but beyond one glacial cycle, data were sparse. Here we present continuous chemical proxy data spanning the last eight glacial cycles (740...

journal_title：Nature

authors： Wolff EW,Fischer H,Fundel F,Ruth U,Twarloh B,Littot GC,Mulvaney R,Röthlisberger R,de Angelis M,Boutron CF,Hansson M,Jonsell U,Hutterli MA,Lambert F,Kaufmann P,Stauffer B,Stocker TF,Steffensen JP,Bigler M,Siggaard-An

更新日期：2006-03-23 00:00:00

abstract：:Quantum information science involves the storage, manipulation and communication of information encoded in quantum systems, where the phenomena of superposition and entanglement can provide enhancements over what is possible classically. Large-scale quantum information processors require stable and addressable quantum...

journal_title：Nature

authors： Moehring DL,Maunz P,Olmschenk S,Younge KC,Matsukevich DN,Duan LM,Monroe C

更新日期：2007-09-06 00:00:00

abstract：:Recent observations have revealed streams of gas and stars in the halo of the Milky Way that are the debris from interactions between our Galaxy and some of its dwarf companion galaxies; the Sagittarius dwarf galaxy and the Magellanic clouds. Analysis of the material has shown that much of the halo is made up of canni...

journal_title：Nature

authors： Ibata R,Irwin M,Lewis G,Ferguson AM,Tanvir N

更新日期：2001-07-05 00:00:00

abstract：:Oxygen isotope analyses of Spondylus shells from neolithic sites suggest that the source for the shells used as ornaments in the Balkans and central Europe during the fourth millennium BC was the Aegean and not the Black Sea. The trade in Spondylus may have taken the form of an exchange of gifts. ...

journal_title：Nature

authors： Shackleton N,Renfrew C

更新日期：1970-12-12 00:00:00

abstract：:In the course of synaptic transmission in the brain and periphery, acetylcholine receptors (AChRs) rapidly transduce a chemical signal into an electrical impulse. The speed of transduction is facilitated by rapid ACh association and dissociation, suggesting a binding site relatively non-selective for small cations. Se...

journal_title：Nature

authors： Mukhtasimova N,Lee WY,Wang HL,Sine SM

更新日期：2009-05-21 00:00:00

abstract：:A novel, structurally distinct POU-domain protein has been identified that inhibits activation by another positive POU-domain regulator of neuron-specific transcription units. Two Drosophila POU-domain proteins, I-POU and Cf1-a, are coexpressed in overlapping subsets of neurons during development. Because I-POU lacks ...

journal_title：Nature

authors： Treacy MN,He X,Rosenfeld MG

更新日期：1991-04-18 00:00:00

abstract：:During development, neuronal survival is regulated by the limited availability of neurotrophins, which are proteins of the nerve growth factor (NGF) family. Activation of specific trk tyrosine kinase receptors by the neurotrophins blocks programmed cell death. The trkA-specific ligand NGF has also been shown to activa...

journal_title：Nature

authors： Frade JM,Rodríguez-Tébar A,Barde YA

更新日期：1996-09-12 00:00:00

abstract：:Most tetrapods have retained terrestrial locomotion since it evolved in the Palaeozoic era, but bats have become so specialized for flight that they have almost lost the ability to manoeuvre on land at all. Vampire bats, which sneak up on their prey along the ground, are an important exception. Here we show that commo...

journal_title：Nature

authors： Riskin DK,Hermanson JW

更新日期：2005-03-17 00:00:00

abstract：:A pathological hallmark of Alzheimer's disease is the deposition of amyloid fibrils in the brain. The principal component of amyloid fibrils is beta/A4 amyloid protein, which can be generated by the aberrant processing of a large membrane-bound glycoprotein, the beta/A4 amyloid protein precursor (APP)3. To test whethe...

journal_title：Nature

authors： Yoshikawa K,Aizawa T,Hayashi Y

更新日期：1992-09-03 00:00:00

abstract：:Genome instability is central to ageing, cancer and other diseases. It is not only proteins involved in DNA replication or the DNA damage response (DDR) that are important for maintaining genome integrity: from yeast to higher eukaryotes, mutations in genes involved in pre-mRNA splicing and in the biogenesis and expor...

journal_title：Nature

authors： Bhatia V,Barroso SI,García-Rubio ML,Tumini E,Herrera-Moyano E,Aguilera A

更新日期：2014-07-17 00:00:00

abstract：:Hunger is a hard-wired motivational state essential for survival. Agouti-related peptide (AgRP)-expressing neurons in the arcuate nucleus (ARC) at the base of the hypothalamus are crucial to the control of hunger. They are activated by caloric deficiency and, when naturally or artificially stimulated, they potently in...

journal_title：Nature

authors： Krashes MJ,Shah BP,Madara JC,Olson DP,Strochlic DE,Garfield AS,Vong L,Pei H,Watabe-Uchida M,Uchida N,Liberles SD,Lowell BB

更新日期：2014-03-13 00:00:00

abstract：:The retinoblastoma tumour-suppressor protein Rb inhibits cell proliferation by repressing a subset of genes that are controlled by the E2F family of transcription factors and which are involved in progression from the G1 to the S phase of the cell cycle. Rb, which is recruited to target promoters by E2F1, represses tr...

journal_title：Nature

authors： Magnaghi-Jaulin L,Groisman R,Naguibneva I,Robin P,Lorain S,Le Villain JP,Troalen F,Trouche D,Harel-Bellan A

更新日期：1998-02-05 00:00:00

abstract：:AMPA (α-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid)-subtype ionotropic glutamate receptors mediate fast excitatory neurotransmission throughout the central nervous system. Gated by the neurotransmitter glutamate, AMPA receptors are critical for synaptic strength, and dysregulation of AMPA receptor-mediated si...

journal_title：Nature

authors： Twomey EC,Yelshanskaya MV,Grassucci RA,Frank J,Sobolevsky AI

更新日期：2017-09-07 00:00:00

abstract：:The distribution of fitness effects of protein mutations is still unknown. Of particular interest is whether accumulating deleterious mutations interact, and how the resulting epistatic effects shape the protein's fitness landscape. Here we apply a model system in which bacterial fitness correlates with the enzymatic ...

journal_title：Nature

authors： Bershtein S,Segal M,Bekerman R,Tokuriki N,Tawfik DS

更新日期：2006-12-14 00:00:00

abstract：:Speciation in many animal taxa is catalysed by the evolutionary diversification of mating signals. According to classical theories of speciation, mating signals diversify, in part, as an incidental byproduct of adaptation by natural selection to divergent ecologies, although empirical evidence in support of this hypot...

journal_title：Nature

authors： Podos J

更新日期：2001-01-11 00:00:00

abstract：:Chemokines are small secreted proteins that stimulate the directional migration of leukocytes and mediate inflammation. During screening of a murine choroid plexus complementary DNA library, we identified a new chemokine, designated neurotactin. Unlike other chemokines, neurotactin has a unique cysteine pattern, Cys-X...

journal_title：Nature

authors： Pan Y,Lloyd C,Zhou H,Dolich S,Deeds J,Gonzalo JA,Vath J,Gosselin M,Ma J,Dussault B,Woolf E,Alperin G,Culpepper J,Gutierrez-Ramos JC,Gearing D

更新日期：1997-06-05 00:00:00

abstract：:Shiga toxin and some other protein toxins that act on targets in the cytosol have previously been shown to enter the trans-Golgi network. Transport by this route may be necessary for translocation of the toxin to the cytosol and for intoxication, but it is not known whether the enzymatically active part of the toxins ...

journal_title：Nature

authors： Sandvig K,Garred O,Prydz K,Kozlov JV,Hansen SH,van Deurs B

更新日期：1992-08-06 00:00:00

abstract：:Electrophoretic studies suggest that bacterial populations consist of a number of independent clones and that genetic recombination is rare in nature. But DNA sequencing reveals that individual bacterial genes have a mosaic structure that could have arisen only by recombination. How can these observations be reconcile...

journal_title：Nature

authors： Smith JM,Dowson CG,Spratt BG

更新日期：1991-01-03 00:00:00