Can the lumpy distribution of galaxies be detected by X-ray observations?

abstract：:Occupancy of the T-cell antigen receptor is insufficient to induce T-cell activation optimally; a second co-stimulatory signal is required. Exposure of T-cell clones to complexes of antigen with major histocompatibility complex molecules in the absence of the co-stimulatory signal induces a state of clonal anergy. Thi...

journal_title：Nature

authors： Harding FA,McArthur JG,Gross JA,Raulet DH,Allison JP

更新日期：1992-04-16 00:00:00

abstract：:Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere. The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents, whereas iodine oxide vapours have been implicated in particle form...

journal_title：Nature

authors： Sipilä M,Sarnela N,Jokinen T,Henschel H,Junninen H,Kontkanen J,Richters S,Kangasluoma J,Franchin A,Peräkylä O,Rissanen MP,Ehn M,Vehkamäki H,Kurten T,Berndt T,Petäjä T,Worsnop D,Ceburnis D,Kerminen VM,Kulmala M,O'D

更新日期：2016-09-22 00:00:00

abstract：:Human cancer cells typically harbour multiple chromosomal aberrations, nucleotide substitutions and epigenetic modifications that drive malignant transformation. The Cancer Genome Atlas (TCGA) pilot project aims to assess the value of large-scale multi-dimensional analysis of these molecular characteristics in human c...

journal_title：Nature

authors： Cancer Genome Atlas Research Network.

更新日期：2008-10-23 00:00:00

abstract：:Presenilin and signal peptide peptidase (SPP) are intramembrane aspartyl proteases that regulate important biological functions in eukaryotes. Mechanistic understanding of presenilin and SPP has been hampered by lack of relevant structural information. Here we report the crystal structure of a presenilin/SPP homologue...

journal_title：Nature

authors： Li X,Dang S,Yan C,Gong X,Wang J,Shi Y

更新日期：2013-01-03 00:00:00

abstract：:There has been much interest in the biochemical and biophysical processes that couple extracellular signals to alterations in gene expression. While many early events associated with the treatment of cells with growth factors have been described (for example, ion flux and protein phosphorylation), it has proved diffic...

journal_title：Nature

authors： Morgan JI,Curran T

更新日期：1986-08-07 00:00:00

abstract：:Regulated fusion of secretory granules with the plasma membrane in secretory cells requires ATP, Ca2+ and cytosolic as well as membrane proteins. ATP-dependent steps in Ca(2+)-activated secretion from PC12 cells require three cytosolic PEP proteins (priming in exocytosis proteins, PEP1-3), the identity of which will p...

journal_title：Nature

authors： Hay JC,Fisette PL,Jenkins GH,Fukami K,Takenawa T,Anderson RA,Martin TF

更新日期：1995-03-09 00:00:00

abstract：:Framework cavities are the largest but least explored coral reef habitat. Previous dive studies of caverns, spaces below plate corals, rubble and artificial cavities suggest that cavity-dwelling (coelobite) filter-feeders are important in the trophodynamics of reefs. Quantitative community data are lacking, however, a...

journal_title：Nature

authors： Richter C,Wunsch M,Rasheed M,Kötter I,Badran MI

更新日期：2001-10-18 00:00:00

abstract：:Capacitors are a mainstay of electronic integrated circuits and devices, where they perform essential functions such as storing electrical charge, and blocking direct current while allowing alternating currents to propagate. Because they are often the largest components in circuits, extensive efforts are directed at r...

journal_title：Nature

authors： Stengel M,Spaldin NA

更新日期：2006-10-12 00:00:00

abstract：:The direct involvement of the pituitary-adrenal axis in birth has been well established, at least in sheep, and its removal prolongs pregnancy. As part of the process the fetal sheep adrenal grows rapidly during the 10-15 d prepartum and is associated with a large rise in the plasma corticosteroid concentration. This ...

journal_title：Nature

authors： Roebuck MM,Jones CT,Holland D,Silman R

更新日期：1980-04-17 00:00:00

abstract：:Alzheimer's disease is the world's most common dementing illness. Deposition of amyloid-β peptide drives cerebral neuroinflammation by activating microglia. Indeed, amyloid-β activation of the NLRP3 inflammasome in microglia is fundamental for interleukin-1β maturation and subsequent inflammatory events. However, it r...

journal_title：Nature

authors： Heneka MT,Kummer MP,Stutz A,Delekate A,Schwartz S,Vieira-Saecker A,Griep A,Axt D,Remus A,Tzeng TC,Gelpi E,Halle A,Korte M,Latz E,Golenbock DT

更新日期：2013-01-31 00:00:00

abstract：:The application of human embryonic stem (ES) cells in medicine and biology has an inherent reliance on understanding the starting cell population. Human ES cells differ from mouse ES cells and the specific embryonic origin of both cell types is unclear. Previous work suggested that mouse ES cells could only be obtaine...

journal_title：Nature

authors： Tesar PJ,Chenoweth JG,Brook FA,Davies TJ,Evans EP,Mack DL,Gardner RL,McKay RD

更新日期：2007-07-12 00:00:00

abstract：:The folding of newly synthesized proteins to the native state is a major challenge within the crowded cellular environment, as non-productive interactions can lead to misfolding, aggregation and degradation1. Cells cope with this challenge by coupling synthesis with polypeptide folding and by using molecular chaperone...

journal_title：Nature

authors： Shiber A,Döring K,Friedrich U,Klann K,Merker D,Zedan M,Tippmann F,Kramer G,Bukau B

更新日期：2018-09-01 00:00:00

abstract：:Protecting the world's freshwater resources requires diagnosing threats over a broad range of scales, from global to local. Here we present the first worldwide synthesis to jointly consider human and biodiversity perspectives on water security using a spatial framework that quantifies multiple stressors and accounts f...

journal_title：Nature

authors： Vörösmarty CJ,McIntyre PB,Gessner MO,Dudgeon D,Prusevich A,Green P,Glidden S,Bunn SE,Sullivan CA,Liermann CR,Davies PM

更新日期：2010-09-30 00:00:00

abstract：:Synapse assembly requires trans-synaptic signals between the pre- and postsynapse, but our understanding of the essential organizational molecules involved in this process remains incomplete. Teneurin proteins are conserved, epidermal growth factor (EGF)-repeat-containing transmembrane proteins with large extracellula...

journal_title：Nature

authors： Mosca TJ,Hong W,Dani VS,Favaloro V,Luo L

更新日期：2012-03-18 00:00:00

abstract：:In lung diseases such as asthma, expiratory flow becomes limited, airways can collapse and the vital exchange of gases is compromised. Here we model the inflation of collapsed regions of the lung during inspiration in terms of avalanches propagating through a bifurcating network of airways, and find that the accompany...

journal_title：Nature

authors： Alencar AM,Arold SP,Buldyrev SV,Majumdar A,Stamenović D,Stanley HE,Suki B

更新日期：2002-06-20 00:00:00

abstract：:Myeloid precursors can be grown in vitro in the presence of specific growth factors; however, their expansion is limited by a competing process of terminal differentiation. Proto-oncogenes seem to be involved in cellular proliferation and/or differentiation and may also play a role in the myelopoietic process. Murine ...

journal_title：Nature

authors： Blasi E,Mathieson BJ,Varesio L,Cleveland JL,Borchert PA,Rapp UR

更新日期：1985-12-19 00:00:00

abstract：:Most common human traits and diseases have a polygenic pattern of inheritance: DNA sequence variants at many genetic loci influence the phenotype. Genome-wide association (GWA) studies have identified more than 600 variants associated with human traits, but these typically explain small fractions of phenotypic variati...

journal_title：Nature

authors： Lango Allen H,Estrada K,Lettre G,Berndt SI,Weedon MN,Rivadeneira F,Willer CJ,Jackson AU,Vedantam S,Raychaudhuri S,Ferreira T,Wood AR,Weyant RJ,Segrè AV,Speliotes EK,Wheeler E,Soranzo N,Park JH,Yang J,Gudbjartsson D

更新日期：2010-10-14 00:00:00

abstract：:The determination of molecular masses from barometric sedimentation profiles, a main topic in ultracentrifugal analysis, is thought to be quantitatively correct for non-interacting particles. Whereas this expectation is justified for uncharged colloids or macromolecules at low volume fractions, early ultracentrifugati...

journal_title：Nature

authors： Raşa M,Philipse AP

更新日期：2004-06-24 00:00:00

abstract：:Nanoscale electronic devices made from carbon nanotubes, such as transistors and sensors, are much smaller and more versatile than those that rely on conventional microelectronic chips, but their development for mass production has been thwarted by difficulties in aligning and integrating the millions of nanotubes req...

journal_title：Nature

authors： Rao SG,Huang L,Setyawan W,Hong S

更新日期：2003-09-04 00:00:00

abstract：:Many natural habitats exist on privately owned land outside protected areas, but few governments can afford to enforce or subsidize conservation of this biodiversity. Even in some developed countries, conservation subsidy schemes have only achieved limited success. Fortunately, some landowners may be willing to accept...

journal_title：Nature

authors： Oldfield TE,Smith RJ,Harrop SR,Leader-Williams N

更新日期：2003-05-29 00:00:00

abstract：:In contrast to activated CD4+ T cells, resting human CD4+ T cells circulating in blood are highly resistant to infection with human immunodeficiency virus (HIV). Whether the inability of HIV to infect these resting CD4+ T cells is due to the lack of a key factor, or alternatively reflects the presence of an efficient ...

journal_title：Nature

authors： Chiu YL,Soros VB,Kreisberg JF,Stopak K,Yonemoto W,Greene WC

更新日期：2005-05-05 00:00:00

abstract：:An amendment to this paper has been published and can be accessed via a link at the top of the paper. ...

journal_title：Nature

authors： Apffel B,Novkoski F,Eddi A,Fort E

更新日期：2020-10-01 00:00:00

abstract：:Historical ecologists working in the Neotropics argue that the present natural environment is an historical product of human intentionality and ingenuity, a creation that is imposed, built, managed and maintained by the collective multigenerational knowledge and experience of Native Americans. In the past 12,000 years...

journal_title：Nature

authors： Erickson CL

更新日期：2000-11-09 00:00:00

abstract：:Distance determination in animals can be achieved by visual or non-visual cues. Weakly electric fish use active electrolocation for orientation in the dark. By perceiving self-produced electric signals with epidermal electroreceptors, fish can detect, locate and analyse nearby objects. Distance discrimination, however...

journal_title：Nature

authors： von der Emde G,Schwarz S,Gomez L,Budelli R,Grant K

更新日期：1998-10-29 00:00:00

abstract：:Expansion of anthropogenic noise and night lighting across our planet1,2 is of increasing conservation concern3-6. Despite growing knowledge of physiological and behavioural responses to these stimuli from single-species and local-scale studies, whether these pollutants affect fitness is less clear, as is how and why ...

journal_title：Nature

authors： Senzaki M,Barber JR,Phillips JN,Carter NH,Cooper CB,Ditmer MA,Fristrup KM,McClure CJW,Mennitt DJ,Tyrrell LP,Vukomanovic J,Wilson AA,Francis CD

更新日期：2020-11-01 00:00:00

abstract：:The ability to trap an object-whether a single atom or a macroscopic entity-affects fields as diverse as quantum optics, soft condensed-matter physics, biophysics and clinical medicine. Many sophisticated methodologies have been developed to counter the randomizing effect of Brownian motion in solution, but stable tra...

journal_title：Nature

authors： Krishnan M,Mojarad N,Kukura P,Sandoghdar V

更新日期：2010-10-07 00:00:00

abstract：:Hyperpolarization-activated cation channels of the HCN gene family contribute to spontaneous rhythmic activity in both heart and brain. All four family members contain both a core transmembrane segment domain, homologous to the S1-S6 regions of voltage-gated K+ channels, and a carboxy-terminal 120 amino-acid cyclic nu...

journal_title：Nature

authors： Wainger BJ,DeGennaro M,Santoro B,Siegelbaum SA,Tibbs GR

更新日期：2001-06-14 00:00:00

abstract：:Human B cell stimulatory factor 2 (BSF-2) was originally characterized and isolated as a T cell-derived factor that caused the terminal maturation of activated B cells to immunoglobulin-producing cells. Molecular cloning of the complementary DNA predicts that BSF-2 is a protein of relative molecular mass (Mr) 26,000 s...

journal_title：Nature

authors： Kawano M,Hirano T,Matsuda T,Taga T,Horii Y,Iwato K,Asaoku H,Tang B,Tanabe O,Tanaka H

更新日期：1988-03-03 00:00:00

abstract：:The discovery of four new Xenoturbella species from deep waters of the eastern Pacific Ocean is reported here. The genus and two nominal species were described from the west coast of Sweden, but their taxonomic placement remains unstable. Limited evidence placed Xenoturbella with molluscs, but the tissues can be conta...

journal_title：Nature

authors： Rouse GW,Wilson NG,Carvajal JI,Vrijenhoek RC

更新日期：2016-02-04 00:00:00

abstract：:The Rab GTPases function as specific regulators of membrane transport. The GTP/GDP cycle is believed to control shuttling of Rab proteins between the cytosol and organelle membranes. In vitro, Rab proteins are removed from membranes by a protein that inhibits GDP dissociation (rabGDI), which leads to formation of a cy...

journal_title：Nature

authors： Ullrich O,Horiuchi H,Bucci C,Zerial M

更新日期：1994-03-10 00:00:00