N-cadherin-dependent neuron-neuron interaction is required for the maintenance of activity-induced dendrite growth.

abstract：:We report substantially improved performance of high-power quantum cascade lasers (QCLs) by using epitaxial-side-down mounting that provides superior heat dissipation properties. We used aluminum nitride as the heatsink material and gold-tin eutectic solder. We have obtained continuous wave power output of 450 mW at 2...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Tsekoun A,Go R,Pushkarsky M,Razeghi M,Patel CK

更新日期：2006-03-28 00:00:00

abstract：:An improved electron cloud bolometer is analyzed. In this device the cloud temperature is read out not via thermal noise induced by the electrons in a coupled LC circuit but via shift in their axial oscillation frequency in the Penning trap confining them. This shift occurs because as the electron cloud expands with i...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Dehmelt H

更新日期：1994-07-05 00:00:00

abstract：:Cyclooxygenase (COX)-2, a rate-limiting enzyme of prostaglandin (PG) production, is overexpressed in colorectal adenomas and adenocarcinomas, and its inhibition by nonsteroidal antiinflammatory drugs protects against colorectal cancer. Mechanisms of cancer promotion by COX-2 are not fully understood, but signaling thr...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Nishihara H,Kizaka-Kondoh S,Insel PA,Eckmann L

更新日期：2003-07-22 00:00:00

abstract：:Complex phenotypes can be modeled as networks of component traits connected by genetic, developmental, or functional interactions. Aposematism, which has evolved multiple times in poison frogs (Dendrobatidae), links a warning signal to a chemical defense against predators. Other traits are involved in this complex phe...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Santos JC,Cannatella DC

更新日期：2011-04-12 00:00:00

abstract：:A cylindrical detonating explosive behaves like a non-Newtonian viscous fluid emerging from a cylindrical pipe. The expression for non-Newtonian viscous flow has been applied to detonating explosives. The resultant fit to emerging flame fronts from detonation is excellent for a wide variety of detonating explosives bo...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Coon N,Ma SM,Redington PK,Brown B,Eyring H

更新日期：1980-10-01 00:00:00

abstract：:The partial purification of mouse mammary gland stem cells (MaSCs) using combinatorial cell surface markers (Lin(-)CD24(+)CD29(h)CD49f(h)) has improved our understanding of their role in normal development and breast tumorigenesis. Despite the significant improvement in MaSC enrichment, there is presently no methodolo...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： dos Santos CO,Rebbeck C,Rozhkova E,Valentine A,Samuels A,Kadiri LR,Osten P,Harris EY,Uren PJ,Smith AD,Hannon GJ

更新日期：2013-04-30 00:00:00

abstract：:mRNA-dependent cell-free protein synthesis systems were prepared from a heme-deficient ole3 mutant of the yeast Saccharomyces cerevisiae grown either in the absence or in the presence of the heme precursor delta-aminolevulinate. When supplemented with total yeast mRNA, the two systems-from heme-deficient and from heme...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hamilton B,Hofbauer R,Ruis H

更新日期：1982-12-01 00:00:00

abstract：:Eleven amino acid positions in the helix-turn-helix of lambda repressor have been mutagenized by using a combinatorial method in which alanine is substituted at each position with a probability of 0.5. Approximately 25% of the 2048 proteins in the resulting binomial library are active, including some variants with as ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gregoret LM,Sauer RT

更新日期：1993-05-01 00:00:00

abstract：:By using an indirect immunofluorescence technique, the distribution of poly(ADP-ribose) synthesis in human blood cells was investigated. The antibody used was reactive with poly(ADP-ribose) larger than trimers. The specific immunofluorescence of poly(ADP-ribose) synthesized in situ from NAD+ was observed in nuclei of ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ikai K,Ueda K,Fukushima M,Nakamura T,Hayaishi O

更新日期：1980-06-01 00:00:00

abstract：:The polymerase chain reaction was used to amplify DNA surrounding the codon 12 region of the c-Ki-ras gene from C3H/10T1/2 cells and from a number of 3-methylcholanthrene (MCA)-transformed derivatives of these cells. Sequence analysis demonstrated that tumorigenic MCAC116/39 cells, known by DNA-mediated transfection t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Chen AC,Herschman HR

更新日期：1989-03-01 00:00:00

abstract：:The scaling of respiratory metabolism with body mass is one of the most pervasive phenomena in biology. Using a single allometric equation to characterize empirical scaling relationships and to evaluate alternative hypotheses about mechanisms has been controversial. We developed a method to directly measure respiratio...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Mori S,Yamaji K,Ishida A,Prokushkin SG,Masyagina OV,Hagihara A,Hoque AT,Suwa R,Osawa A,Nishizono T,Ueda T,Kinjo M,Miyagi T,Kajimoto T,Koike T,Matsuura Y,Toma T,Zyryanova OA,Abaimov AP,Awaya Y,Araki MG,Kawasaki T

更新日期：2010-01-26 00:00:00

abstract：:Increased cardiovascular mortality occurs in diabetic patients with or without coronary artery disease and is attributed to the presence of diabetic cardiomyopathy. One potential mechanism is hyperglycemia that has been reported to activate protein kinase C (PKC), preferentially the beta isoform, which has been associ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Wakasaki H,Koya D,Schoen FJ,Jirousek MR,Ways DK,Hoit BD,Walsh RA,King GL

更新日期：1997-08-19 00:00:00

abstract：:A general theory of the structure of complexes of the transition metals is developed on the basis of the enneacovalence of the metals and the requirements of the electroneutrality principle. An extra orbital may be provided through the small but not negligible amount of f and g character of spd bond orbitals, and an e...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pauling L

更新日期：1977-12-01 00:00:00

abstract：:The 8;21 translocation is one of the most common specific rearrangements in acute myelogenous leukemia. We have identified markers (D21S65 and a Not I boundary clone, Not-42, referred to as probe B) flanking the chromosome 21 translocation breakpoint (21q22.3) that demonstrate physical linkage in normal genomic DNA, b...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Gao J,Erickson P,Gardiner K,Le Beau MM,Diaz MO,Patterson D,Rowley JD,Drabkin HA

更新日期：1991-06-01 00:00:00

abstract：:Marine Archaea are important players among microbial plankton and significantly contribute to biogeochemical cycles, but details regarding their community structure and long-term seasonal activity and dynamics remain largely unexplored. In this study, we monitored the interannual archaeal community composition of abun...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hugoni M,Taib N,Debroas D,Domaizon I,Jouan Dufournel I,Bronner G,Salter I,Agogué H,Mary I,Galand PE

更新日期：2013-04-09 00:00:00

abstract：:Over the last decade a variety of MS measurements, such as HD exchange, collision cross sections, and electron capture dissociation (ECD), have been used to characterize protein folding in the gas phase, in the absence of solvent. To the extensive data already available on ubiquitin, here photofragmentation of its ECD...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Oh H,Breuker K,Sze SK,Ge Y,Carpenter BK,McLafferty FW

更新日期：2002-12-10 00:00:00

abstract：:Hendra virus (HeV) and Nipah virus (NiV) belong to the genus Henipavirus of the family Paramyxoviridae and are unique in that they exhibit a broad species tropism and cause fatal disease in both animals and humans. They infect cells through a pH-independent membrane fusion process mediated by their fusion and attachme...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Bonaparte MI,Dimitrov AS,Bossart KN,Crameri G,Mungall BA,Bishop KA,Choudhry V,Dimitrov DS,Wang LF,Eaton BT,Broder CC

更新日期：2005-07-26 00:00:00

abstract：:Liquid RNA.DNA hybridization with separated strands of adenovirus type 2 DNA revealed that late nuclear RNA can hybridize to about 85% of the 1-strand and 10-15% of the h-strand, whereas late cytoplasmic RNA hybridizes to 65-70% and 25% of the l- and h-strand, respectively. With separated strands from the six EcoRI fr...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Pettersson U,Philipson L

更新日期：1974-12-01 00:00:00

abstract：:To help reach the target of tuberculosis (TB) disease elimination by 2050, vaccine development needs to occur now. We estimated the impact and cost-effectiveness of potential TB vaccines in low- and middle-income countries using an age-structured transmission model. New vaccines were assumed to be available in 2024, t...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Knight GM,Griffiths UK,Sumner T,Laurence YV,Gheorghe A,Vassall A,Glaziou P,White RG

更新日期：2014-10-28 00:00:00

abstract：:Expression of glucokinase in hepatocytes and pancreatic 6-cells is of major physiologic importance to mammalian glucose homeostasis. Liver glucokinase catalyzes the first committed step in the disposal of glucose, and beta-cell glucokinase catalyzes a rate-limiting step required for glucose-regulated insulin release. ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Heimberg H,De Vos A,Moens K,Quartier E,Bouwens L,Pipeleers D,Van Schaftingen E,Madsen O,Schuit F

更新日期：1996-07-09 00:00:00

abstract：:For the polypentapeptide of elastin, (L-Val-L-Pro-Gly-L-Val-Gly)n, and appropriate analogs when suitably cross-linked, it has been previously demonstrated that development of elastomeric force at fixed length and length changes at fixed load occur as the result of an inverse temperature transition, with the temperatur...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Urry DW,Haynes B,Zhang H,Harris RD,Prasad KU

更新日期：1988-05-01 00:00:00

abstract：:The MYC and RAS oncogenes are frequently activated in cancer and, together, are sufficient to transform rodent cells. The basis for this cooperativity remains unclear. We found that although Ras interfered with Myc-induced apoptosis, Myc repressed Ras-induced senescence, together abrogating two main barriers of tumori...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Hydbring P,Bahram F,Su Y,Tronnersjö S,Högstrand K,von der Lehr N,Sharifi HR,Lilischkis R,Hein N,Wu S,Vervoorts J,Henriksson M,Grandien A,Lüscher B,Larsson LG

更新日期：2010-01-05 00:00:00

abstract：:Conventional markets can underprovide ecosystem services. Deliberate creation of a market for ecosystem services [e.g., a payments for ecosystem services (PES) scheme] can close the gap. The new ecosystem service market alters behaviors and quantities of ecosystem service provided and reveals prices for the ecosystems...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Adamowicz W,Calderon-Etter L,Entem A,Fenichel EP,Hall JS,Lloyd-Smith P,Ogden FL,Regina JA,Rouhi Rad M,Stallard RF

更新日期：2019-03-19 00:00:00

abstract：:The subcellular localization of Ocrl, the inositol polyphosphate 5-phosphatase that is mutated in Lowe syndrome, was investigated by fluorescence microscopy. Ocrl was localized to endosomes and Golgi membranes along with clathrin, giantin, the mannose 6-phosphate receptor, transferrin, and the early endosomal antigen ...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Ungewickell A,Ward ME,Ungewickell E,Majerus PW

更新日期：2004-09-14 00:00:00

abstract：:Equity is of fundamental concern in the quest for international cooperation to stabilize greenhouse gas concentrations by the reduction of emissions. By modeling the carbon cycle, we estimate the global CO(2) emissions that would be required to stabilize the atmospheric concentration of CO(2) at levels ranging from 45...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Bolin B,Kheshgi HS

更新日期：2001-04-24 00:00:00

abstract：:Senescent cell antigen (SCA), an aging antigen, is a protein that appears on old cells and marks them for removal by the immune system in mammals. It is derived from band 3, a ubiquitous membrane transport protein found in diverse cell types and tissues. We have used synthetic peptides to identify aging antigenic site...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Kay MM,Marchalonis JJ,Hughes J,Watanabe K,Schluter SF

更新日期：1990-08-01 00:00:00

abstract：:The HB-19 pseudopeptide 5[Kpsi(CH(2)N)PR]-TASP, psi(CH(2)N) for reduced peptide bond, is a specific inhibitor of HIV infection in different CD4(+) cell lines and in primary T-lymphocytes and macrophages. It blocks virus-particle attachment to permissive cells by binding and forming a stable complex with nucleolin expr...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Krust B,Vienet R,Cardona A,Rougeot C,Jacotot E,Callebaut C,Guichard G,Briand JP,Grognet JM,Hovanessian AG,Edelman L

更新日期：2001-11-20 00:00:00

abstract：:Male mice were injected intraperitoneally with 125 microCi (1 Ci = 3.7 X 10(10) becquerels) of [3H]thymidine at 1-hr intervals and killed 1 hr after the second injection. Testes were prepared for bright-field and electron microscopic autoradiography. Primary spermatocytes, identified by light microscopy to be at the p...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Grell RF,Oakberg EF,Generoso EE

更新日期：1980-11-01 00:00:00

abstract：:Paleoclimate studies suggest that increased global warmth during the Eocene epoch was greatly amplified at high latitudes, a state that climate models cannot fully reproduce. However, proxy estimates of Eocene near-Antarctic sea surface temperatures (SSTs) have produced widely divergent results at similar latitudes, w...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Douglas PM,Affek HP,Ivany LC,Houben AJ,Sijp WP,Sluijs A,Schouten S,Pagani M

更新日期：2014-05-06 00:00:00

abstract：:The measurement of any nonchromosomal genetic contribution to the heritability of a trait is often confounded by the inability to control both the chromosomal and nonchromosomal information in a population. We have designed a unique system in yeast where we can control both sources of information so that the phenotype...

journal_title：Proceedings of the National Academy of Sciences of the United States of America

authors： Edwards MD,Symbor-Nagrabska A,Dollard L,Gifford DK,Fink GR

更新日期：2014-05-27 00:00:00