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transition metals as oxygen reduction electrocatalysts. Nat Chem 2009, 1:552–556. 10.1038/nchem.367CrossRef 17. Sepa DB, Vojnovic MV, Damjanovic A: Reaction intermediates as a controlling factor in the kinetics and mechanism of oxygen reduction at platinum electrodes. Electrochim Acta 1981, 26:781–793. 10.1016/0013-4686(81)90037-2CrossRef 18. Garsany Y, Barurina OA, Swider-Lyons KE, Kocha SS: Experimental methods for quantifying the activity of platinum electrocatalysts for the oxygen reduction reaction. Anal Chem 2010, 82:6321–6328. 10.1021/ac100306cCrossRef 19. Guo S, Sun S: FePt nanoparticles assembled on graphene as enhanced find more catalyst for oxygen reduction reaction. J Am Chem Soc 2012, 134:2492–2495. 10.1021/ja2104334CrossRef 20. Yung TY, Lee JY, Liu LK: Nanocomposite for methanol: synthesis and characterization of cubic Pt nanoparticles on graphene sheets. Sci Technol Adv Mater 2013, 14:035001. 10.1088/1468-6996/14/3/035001CrossRef 21. Wu J, Zhang J, Peng Z, Yang S, Wangner FT, Yang H: Truncated octahedral Pt 3 Ni oxygen reduction reaction electrocatalysts. J Am Chem Soc 2010, 132:4984–4985. 10.1021/ja100571hCrossRef 22. Wang Gemcitabine cell line Y, Wang S, Xiao M, Han D, Hickner M, Meng Y: Layer-by-layer self-assembly of PDDA/PSS-SPFEK composite

membrane with low vanadium permeability for vanadium redox flow battery. RSC Adv 2013, 35:15467–15474.CrossRef 23. Wang S, Wang X, Jiang SP: Self-assembly of mixed Pt and Au nanoparticles on PDDA-functionalized graphene as effective electrocatalysts for formic acid oxidation fuel cells. Phys Chem Chem Phys 2011, 13:6883–6891. 10.1039/c0cp02495cCrossRef 24. Wang S, Yu D, Dai L, Chang JB: Polyelectrolyte-functionalized graphene as metal-free electrocatalysts for oxygen reduction. ACS Nano 2011, 5:6202–6209. 10.1021/nn200879hCrossRef 25. Yuan L, He Y: Effect of surface charge of PDDA-protected gold nanoparticles on the specificity and efficiency of

DNA polymerase chain reaction. Analyst Tolmetin 2012, 138:539–545.CrossRef 26. Zhu LP, Liao GH, Xiao HM, Wang JF, Fu SY: Self-assembled 3D flower-like hierarchical β-Ni(OH) 2 hollow architectures and their in situ KU55933 manufacturer thermal conversion to NiO. Nanoscale Res Lett 2009, 4:550–557. 10.1007/s11671-009-9279-9CrossRef 27. Wang H, Kou X, Zhang J, Li J: Large scale synthesis and characterization of Ni nanoparticles by solution reaction method. Bull Mater Sci 2008, 31:97–100. 10.1007/s12034-008-0017-1CrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions TYY, LYH, and TYL conceived and designed the experiments. PTC, LYH, TYC, and KSW performed the experiments. TYY, LYH, TYC, CYC, and KSW contributed ideas and material analyses. TYY, TYL, and LKL wrote the manuscript. This work was performed under the supervision of LKL. All authors read and approved the final manuscript.

Infect Immun 2009, 77:1866–1880 PubMedCrossRef 56 Geng J, Song Y

Infect Immun 2009, 77:1866–1880.PubMedCrossRef 56. Geng J, Song Y, Yang L, Feng Y, Qiu Y, Li G, Guo J, Bi Y, Qu Y, Wang W, et al.: Involvement of the Post-Transcriptional Regulator Hfq in Yersinia Cytoskeletal Signaling inhibitor pestis Virulence. PLoS One 2009, 4:e6213.PubMedCrossRef 57. Morton DJ, Whitby PW, Jin H, Ren Z, Stull TL: Effect of multiple mutations in the hemoglobin- and hemoglobin-haptoglobin-binding proteins, HgpA, HgpB, and HgpC, of Haemophilus influenzae type b. Infect Immun 1999, 67:2729–2739.PubMed 58. Mann B, van Opijnen T, Wang J, Obert C, Wang Y-D, Carter R, McGoldrick DJ, Ridout G, Camilli A, Tuomanen EI, Rosch JW: Control of Virulence by Small RNAs

in Streptococcus pneumoniae . PLoS Pathog 2012, 8:e1002788.PubMedCrossRef 59. Ding Y, Davis BM, Waldor MK: Hfq is essential for Vibrio cholerae virulence and downregulates sigma expression. Mol Microbiol BVD-523 clinical trial 2004, 53:345–354.PubMedCrossRef Competing interests The authors declare that they have no competing interests. Authors’ contributions RJH conceived the study. All authors participated in the study design and data analysis. RJH performed the sequence alignment, primer extension

assay, in vitro growth assays, and drafted the manuscript. RJH and DJM performed the chinchilla experiments. RJH and TWS performed the infant rat studies. DJM, see more TWS, PWW and TLS revised the manuscript. All authors read and approved the final manuscript.”
“Background Campylobacter jejuni is a Gram-negative, spiral-shaped, motile bacterium and is a leading cause of bacterial food-borne enteritis in humans [1, 2]. Most human C. jejuni infections are acquired by consuming or handling contaminated poultry, milk or water. Clinical symptoms of campylobacteriosis Urease can range from mild diarrhea to fever, headache, abdominal cramping, vomiting and bloody diarrhea. Studies also demonstrated that Campylobacter infection is associated with

Guillain-Barré syndrome as a post-infection complication [3]. Although most campylobacteriosis cases are self-limiting, antibiotic therapy may be necessary for severe or persistent illness [4]. Macrolide, such as erythromycin (Ery), is the drug of choice for treating campylobacteriosis, but the frequency of resistance to this class of antibiotic is rising [5, 6]. As an inhibitor of protein translation in bacterial cells, Ery and other macrolide antibiotics interfere with aminoacyl translocation, preventing the transfer of the tRNA bound at the A site to the P site of the rRNA complex. Without this translocation, the A site remains occupied and thus precludes the incoming tRNA from attaching its amino acid to the nascent polypeptide [7–9]. The molecular mechanism of resistance to Ery in C. jejuni has been extensively studied and is conferred largely by target modification (such as mutations in the 23S rRNA gene and ribosomal proteins) [6, 7, 10] and antibiotic efflux pumps [11].

J Immunol Methods 1998,221(1–2):35–41 PubMedCrossRef Conflicts of

J Immunol Methods 1998,221(1–2):35–41.PubMedCrossRef Conflicts of interests Patents for the in vitro and in vivo use of EndoS have been applied for by Genovis AB and Hansa Medical AB, respectively. MC is listed as inventor on these applications that are pending.

Hansa Medical AB in part funded this study, but had no influence on the design of study, interpretation of data, or the final form of the manuscript. MC is a part time scientific consultant for Hansa Medical AB. Authors’ contributions JS participated in the selleckchem design of the study, performed experiments and drafted the manuscript. MC and VN conceived of the study. CO performed experiments. AH designed the study and performed experiments. All authors read and approved the final manuscript.”
“Background Genes that are highly conserved between different types of organisms code for important biological functions and are therefore usually well studied and described. One group of conserved genes whose function has remained enigmatic until recently is the Kae1(OSGEP)/YgjD

family. Genes from this family occur in almost all bacterial, Olaparib archaeal and eukaryotic genomes. The gene family consists of two groups: one group, GCP1/OSGEPL/Qri7, is of bacterial origin, the other, GCP2/OSGEP/Kae, is supposed to originate from archaea [1]. In Escherichia coli, Kae1/YgjD is essential for viability [2, 3]; in Arabidopsis thaliana and Saccharomyces cerevisia, deletion mutants exhibit deleterious phenotypes [4–6]. A biochemical activity for YgjD has recently been described: as already suggested by [7], Srinivasan and colleagues [8] showed that Kae1/YgjD protein (of Saccharomyces cerevisiae and Escherichia MG-132 coli, respectively) is required to add a threonyl carbamoyl adenosine (t6A) modification to a subset of tranfer-RNAs that recognize codons with an adenin at the first position. Transfer-RNAs undergo complex modifications and maturation steps [9] required for translational fidelity [10–12]. Selleck PD332991 Mutations in these modification pathways can be lethal or cause severe defects [13–15], and the involved genes are highly conserved in different organisms [14–16]. Because ygjD is

essential, it is not possible to delete the gene and study the phenotypic consequences. As an alternative, one can put the gene under control of an inducible promoter, and investigate the consequence of turning off its expression, and thereby depleting the YgjD protein. Our aim here is to get insights into the morphological changes that come about when the YgjD protein is depleted from growing Escherichia coli cells. In two studies ([3] and [17]), the authors have noticed an effect on cell size in YgjD depletion strains, suggesting a role of YgjD for cell division and/or cellular elongation. However, while Katz et al. observed shorter cells under YgjD depletion conditions, Handford et al. observed a mixed population of elongated and short cells.

Ecol Lett 5:733–741CrossRef Brooks TM, Stuart

Ecol Lett 5:733–741CrossRef Brooks TM, Stuart MM-102 clinical trial LP, Kapos V, Ravilious C (1999) Threat from deforestation to montane and lowland birds and mammals in insular South-east Asia. J Anim Ecol 68(6):1061–1078CrossRef Brooks TM, Mittermeier RA, Mittermeier CG, da Fonseca GAB, Rylands AB, Konstant WR, Flick P, Pilgrim J, Oldfield S, Magin G, Hilton-Taylor C (2002) Habitat loss and extinction in the hotspots of biodiversity. Conserv Biol 16(4):909–923CrossRef Caro TN, O’Doherty G (1999) On the use of surrogate species in conservation biology. Conserv Biol 13(4):805–814CrossRef Carranza EJM, Mangaoang JC, Hale M (1999) Application

of mineral exploration models and GIS to generate mineral potential maps as input for optimum land-use planning in the Philippines. Nat Resour Res 8(2):165–173CrossRef Chao A, Chazdon RL, Colwell RK, Shen T-J (2005) A new statistical approach for assessing similarity of species composition with incidence and VX-680 research buy abundance data. Ecol Lett 8(2):148–159CrossRef Co LL, Tan BC (1992) Botanical exploration in Palanan

wilderness, Isabela Province, the Philippines: first report. Flora Males Bull 11(1):49–53 Co LL, Lagunzad DA, LaFrankie JV, Bartolome NA, Molina JE, Yap SL, Garcia HG, Bautista JP, Gumpal EC, Arano RR, Davies SJ (2004) Palanan forest dynamic plot, Philippines. In: Losos EC, Leigh EG Jr (eds) Tropical forest diversity and dynamism: Smad inhibitor findings form a large-scale plot network. The University of Chicago Press, Chicago, pp 574–584 Collins NM, Sayer JA, Whitmore TC (1991) The conservation atlas of tropical forests. IUCN, Gland Colwell RK (2005) EstimateS v 8.0. Available at http://​viceroy.​eeb.​uconn.​edu/​estimates DENR (Department of Environment and Natural Resources) (1992) NIPAS implementing rules and regulations. Department Administrative Order No 25. DENR, Manila Diaz-Frances E, Soberon J (2005) Statistical estimation and model selection of species-accumulation functions. Conserv Biol 19(2):569–573CrossRef ESSC (Environmental Science for Social Change Inc) (1999) Decline of the Philippine forest. Bookmark, Makati City Fleishman

E, Thomson MRIP JR, Mac Nally R, Murphy DD, Fay JP (2005) Using indicator species to predict species richness of multiple taxonomic groups. Conserv Biol 19(4):1125–1137CrossRef Fortus JF, Garcia HG (2002a) Floristic study of ultrabasic forest at Northern part [Diguides] of Northern Sierra Madre Natural Park. Technical report Northern Sierra Madre Natural Park—Conservation Project, Cabagan Fortus JF, Garcia HG (2002b) Floristic study of ultrabasic forest at Southern part [Divinisa] of Northern Sierra Madre Natural Park. Technical report, Northern Sierra Madre Natural Park—Conservation Project, Cabagan Freitag S, van Jaarsveld AS (1997) Relative occupancy, endemism, taxonomic distinctiveness and vulnerability: prioritizing regional conservation actions.

Without a relatively robust effect on these markers following exe

Without a relatively robust effect on these markers following exercise, it may be difficult to assess

differences in recovery between treatments, especially with a relatively small sample of subjects, as described by Luden et al. [6]. This issue is particularly relevant with regards to our measurements of vertical jump performance. Byrne and Eston [33] reported that vertical jump performance declined to 90% of initial levels one day following GSK3326595 muscle damaging exercise. However, their exercise protocol produced elevations in CK that were approximately 3-4 times greater than the present study. Because our vertical jump device assessed only 0.5 inch increments, our instrument potentially lacked the sensitivity to detect realistic changes in vertical jump height. Other investigators have reported significant decrements check details in physical performance, fatigue and/or muscle soreness following periods of ITD [3, 39]. However, these studies provided 8-11 days of ITD (and relatively low post-exercise carbohydrate intake), which represented a much greater alteration in training stimulus

than the present study. Thus, it may be worthwhile for future researchers to investigate the efficacy of CM during longer, more demanding periods of ITD. Due to the practical restrictions of studying collegiate athletes, it was also not possible to add a placebo trial to the present study design. This prevented us from establishing the direct effects of the ITD period, independent of supplementation. Recovery beverages were provided immediately post-exercise, and both contained high doses of carbohydrate (>1.1 g/kg). As a result, both beverages probably produced high rates of post-exercise glycogen resynthesis [40], and potentially sustained muscle recovery and performance levels to a greater degree than if inadequate carbohydrate were provided [3, 39]. However, the relative efficacy of the ‘control’ beverage in this study (CHO) cannot be quantified without a placebo trial for comparison. Conclusions In summary, post-exercise Endonuclease CM supplementation

resulted in significantly lower serum CK levels following four days of heavy soccer training. However, other measurements of muscle recovery were generally similar between treatment beverages, and there were no differences in whole-body exercise performance between treatments. Thus, exercise recovery during short-term periods of heavy soccer training appears to be similar when isocaloric CM and CHO beverages are consumed post-exercise. It is possible that potential differences between treatments could be magnified by a greater training NU7441 stimulus. Thus, it is recommended that future studies perform similar comparisons during training periods that involve greater increases in training volumes over longer periods of time.

Two isolates (H063920004 and H091960009) were sequenced with diff

Two isolates (H063920004 and H091960009) were sequenced with different technologies. H063920004 with Illumina paired end, Illumina mate-paired and Roche 454, H091960009 with Illumina paired end and Illumina mate-paired. There were

no SNP differences between the sequences of these replicate samples demonstrating that the protocol used for calling SNP variants is both robust and consistent. There were three isolates of ST47 (labelled ST47, LP-617 and Lorraine), two from the UK and one from France, each isolated in a different year between 2003 and 2006. These differed by just four SNPs. Two ST42 isolates, from the UK and USA (labelled Selonsertib ST42 and Wadsworth), were isolated 20 years apart and only exhibited 20 SNP differences. In contrast two ST1 isolates, a representative of the ‘Paris’ strain and a UK strain sequenced as part of another study, were isolated within 2 years of each other yet these exhibited 280 SNP differences. These results show that lineages of L. pneumophila contain differing levels of observable diversity. There are several evolutionary scenarios that could be postulated Repotrectinib in vivo as explanations for these observed differences. A lineage that occupies a niche where there is strong purifying selection will be less diverse. Conversely a lineage that is the result of rapid expansion

within a previously unoccupied niche will tend to be more diverse. One likely scenario is that ST1 is a successful clonal lineage that emerged before the ST47 lineage and therefore has had more time to diversify by genetic drift. It is also possible that each lineage of L. pneumophila will be subject to differing selection pressures when infecting a human host, even though this is effectively an evolutionary dead-end. One possible scenario is that the majority of ST1 strains

and a limited number of sub-lineages of ST47 cause YM155 order disease in humans. If this is the case then a likely explanation is that the common ancestor of the ST1 lineage was able to infect the human species and the ancestor of the ST47 lineage did not replicate effectively in a human host. Subsequently a minority of descendents of the ST47 lineage have acquired Farnesyltransferase the ability (through mutation, gene loss or acquisition) to cause human infection. Differentiating between these putative evolutionary scenarios will be difficult and will require a greater understanding of the effects of diversity within the lineages of L. pneumophila sampled from the environment and human infections. When examining the output from the Splits Tree analysis, the more splits observed, the more recombination or HGT is likely to have taken place. The majority of clades in the tree show a branching network structure suggestive of frequent recombination. The Phi test for recombination as implemented in SplitsTree also showed evidence for recombination (p = 0.0). The exceptions are the clade(s) containing ST136/154 and ST707.

In multiple myeloma (MM), interactions of bone marrow stromal cel

In multiple myeloma (MM), interactions of bone marrow stromal cells with the malignant plasma cells have gained significant

importance as targets for novel therapeutic agents. Based upon these observations, we aimed at analyzing in detail the secretory capacity of bone marrow fibroblasts obtained from patients with MM in order to better Selleck AR-13324 understand their contribution to disease progression. We therefore analyzed the secretome of primary bone marrow fibroblasts of MM patients by proteome profiling based on highly sensitive mass spectrometry. Normal skin and bone marrow fibroblasts were found to secrete various extracellular matrix (ECM) proteins including fibronectin, collagens and laminins, in addition to some chemokines and cytokines including CXCL12, follistatin-like 1, insulin-like growth factor binding proteins 4, 5 and 7; and SPARC. In contrast, bone-marrow-derived fibroblasts from MM patients secreted increased amounts of ECM

proteins and alpha-fetoprotein in addition to insulin-like growth factor II, stem cell growth factor and matrix metalloproteinase-2. Co-culture of primary MM cells with these fibroblasts further stimulated the secretion of ECM proteins, of cytokines such as inhibin beta A chain and growth factors such as connective BMS202 datasheet tissue growth factor, which might be relevant to support the malignant clone. Analyses of the secretion capacity of PIK3C2G bone marrow fibroblasts from patients with MGUS show that their secretome profile is also different compared to that of normal bone marrow fibroblasts. Proteome Vadimezan concentration profiling of secreted proteins may thus help to identify relevant tumor-associated proteins, to increase our understanding

of cell cooperativity and thereby increase our understanding of progression events in monoclonal gammopathies. O133 How do Endothelial Cells Shape the Tissue Microenvironment? A Proteomic Approach Thomas Mohr 1 , Stefan Stättner2, Nina Gundacker1, Verena Haudek1, Astrid Slany1, Christine Brostjan3, Reinhard Horvat4, Josef Karner2, Michael Micksche1, Christopher Gerner1 1 Department of Medicine I, Institute of Cancer Research, Medical University of Vienna, Vienna, Austria, 2 Department of Surgery, Social Medical Center South, Vienna, Austria, 3 Department of Surgery Research Laboratories, Medical University of Vienna, Vienna, Austria, 4 Institute of Clinical Pathology, Medical University of Vienna, Vienna, Austria Endothelial cells (EC) substantially shape the tissue microenvironment which plays a critical role in tumor progression. We established protein maps of the secretome of human umbilical vein endothelial cells (HUVEC), human liver endothelial cells (HLEC) and human tumor derived endothelial cells (HTEC) from ovarian carcinoma. HLEC and HTEC were isolated using magnetic beads (anti CD31).

Fetal bovine serum (FBS), penicillin G, streptomycin, and amphote

Fetal bovine serum (FBS), penicillin G, streptomycin, and amphotericin B were purchased from Chemicon (Billerica, MA, USA). Heparin, dimethylsulfoxide (DMSO), and in vitro toxicology assay kit (XTT based) were purchased from Sigma (St. Louis, MO, USA). Vero (African green monkey

kidney cells, ATCC CCL-81), HEL (human embryonic lung fibroblast, ATCC CCL-137), and A549 (human lung carcinoma, ATCC CCL-185) cells were obtained from the American Type Culture Collection (ATCC; Rockville, MD, USA) and cultured in DMEM supplemented with 10% FBS, 200 U/ml penicillin G, 200 μg/ml streptomycin, and 0.5 μg/ml amphotericin B. VS-4718 order Huh-7.5 (human hepatocarcinoma Huh-7 cell derivative; provided by Dr. Charles M. Rice, The Rockefeller University, New York, NY, USA) and HEp-2 (human epithelial cells derived from a larynx carcinoma; provided by R. Anderson) cells were cultured

in the same medium condition as just described. CHO-SLAM or Chinese hamster ovary cells expressing human signaling lymphocyte activation molecule, the receptor for wild-type measles, were generated as previously reported and cultured in AMEM supplemented with 10% FBS and 800 μg/ml of G418 [37, 38]. HCMV (AD169 strain; provided selleck compound by Dr. Karen L. Mossman, McMaster University, Hamilton, ON, Canada), wild-type human adenovirus type-5 (ADV-5), and VSV-GFP (vesicular stomatitis virus with green fluorescent protein tag) have been described elsewhere and viral

titers and antiviral assays were determined by standard plaque assay using methanol SBE-��-CD manufacturer fixation followed by crystal violet (Sigma) [33, 39, 40]. Cell-culture derived HCV particles were produced by electroporation of Huh-7.5 cells using the Jc1FLAG2(p7-nsGluc2A) construct (genotype 2a; kindly provided by Dr. Charles M. Rice), very which harbors a Gaussia luciferase reporter that allows detection of virus infectivity, as previously described [41]. HCV viral titer and antiviral assays were determined by immunofluorescence staining of TCID50 using anti-NS5A 9E10 antibody (gift from Dr. Charles M. Rice) and luciferase assays. DENV-2 (dengue virus type 2; strain 16681) and RSV (serogroup A, Long strain; ATCC VR-26) were propagated in Vero and HEp-2 cells, respectively [42, 43].

Scand J Work Environ Health 33:233–239PubMed Cox DR, Snell EJ (19

Scand J Work Environ Health 33:233–239PubMed Cox DR, Snell EJ (1968) A general definition of residuals. J R Stat Soc Ser B Methodol 30:248–275 Crook J, Moldofsky H (1994) The probability of recovery and return to work

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JW (2008) Frequent and long-term absence as a risk factor for work disability and job termination among employees in the private sector. Occup Environ Med 65:494–499PubMedCrossRef Krause N, Frank JW, Dasinger LK, Sullivan TJ, Sinclair SJ (2001) Determinants of duration of disability and return-to-work after work-related injury and illness: challenges for future research. Am J Ind Med 40:464–484. doi:10.​1002/​ajim.​1116 PubMedCrossRef Lie SA, Eriksen HR, Ursin H, Hagen EM (2008) A multi-state model for sick-leave Non-specific serine/threonine protein kinase data applied to a randomized control trial study of low back pain. Scand J Public Health 36:279–283. doi:10.​1177/​1403494807086979​ PubMedCrossRef Lund T, Labriola M, Christensen KB, Bültmann U, Villadsen E (2006) Return to work among sickness-absent Danish employees: prospective results from the Danish Work Environment Cohort Study/National Register on Social Transfer Payments. Int J Rehabil Res 29:229–235. doi:10.​1097/​01.​mrr.​0000210056.​24915.​c2 PubMedCrossRef Meira-Machado LF, Una-Alvarez JD, Cadarso-Suarez C, Andersen P (2008) Multi-state models for the analysis of time-to-event data. Stat Methods Med Res. doi:10.

The dark curve is also presented For a temperature of 0 4 K, we

The dark curve is also presented. For a temperature of 0.4 K, we observe an intense spike at w ≈ 2w c. Finally, we obtain the usual radiation-Selleck MM-102 induced R x x oscillations and ZRS as in standard samples. Conclusions In this letter, we have presented a theoretical approach to the striking result of the magnetoresistance spike in the second harmonic of the cyclotron frequency. According to our model, the strong change

in the density of Landau states in ultraclean samples affects dramatically the electron impurity scattering and eventually the conductivity. selleck chemicals The final result is that the scattered electrons perceive radiation as of half frequency. The calculated results are in good agreement with experiments. Authors’ information JI is an associate professor at the University Carlos III of Madrid. He is currently studying the effect of radiation on two-dimensional electron systems. Acknowledgements This work is supported by the MCYT (Spain) under grant MAT2011-24331 and ITN grant 234970 (EU). References 1. Iñarrea J, Platero G: Photoinduced current bistabilities in a semiconductor double barrier. Europhys Lett 1996, 34:43–47.CrossRef 2. Iñarrea J, Platero G: Photoassisted sequential tunnelling through superlattices. Europhys Lett 1996, 33:477–482.CrossRef 3. Iñarrea J, Aguado R, Platero G: Electron-photon interaction in resonant tunneling diodes. Europhys Lett 1997, 40:417–422.CrossRef 4. Mani RG, Smet JH, von Klitzing

K, Narayanamurti V, Johnson WB, Umansky V: Zero-resistance

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