477 research outputs found

    Commodity Supply and Extraterritorial Patent Infringement in Life Technologies V. Promega

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    American patent law grants inventors the exclusive right, within U.S. territory, to make, sell, use, and import their patented inventions. In response to attempts to circumvent the right by making the components of an invention within the U.S. and exporting them for assembly abroad, Congress passed 35 U.S.C. § 271(f), prohibiting “suppl[ying] . . . from the United States all or a substantial portion of the components of a patented invention . . . to actively induce the combination of such components outside of the United States . . . .” Petitioner Life Technologies supplied one commodity component of a patented five-component genetic testing kit from the U.S. The Federal Circuit held them liable under § 271(f), upholding a jury verdict and allowing that one component could be a “substantial portion of the components.” The Supreme Court reversed, reading § 271(f) not to reach the supply of a single component. This ruling will help to preserve suppliers’ confidence in their freedom to ship commodities overseas without being liable for infringement

    Embryos as Patients? Medical Provider Duties in the Age of CRISPR/Cas9

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    The CRISPR/Cas9 genome engineering platform is the first method of gene editing that could potentially be used to treat genetic disorders in human embryos. No past therapies, genetic or otherwise, have been intended or used to treat disorders in existent embryos. Past procedures performed on embryos have exclusively involved creation and implantation (e.g., in-vitro fertilization) or screening and selection of already-healthy embryos (e.g., preimplantation genetic diagnosis). A CRISPR/Cas9 treatment would evade medical malpractice law due to the early stage of the intervention and the fact that it is not a treatment for the mother. In most jurisdictions, medical professionals owe no duty to pre-viable fetuses or embryos as such, but will be held liable for negligent treatment of the mother if the treatment causes injury to a born-alive child. This issue brief discusses the science of CRISPR/Cas9, the background legal status of human embryos, and the case for considering genetically engineered embryos as patients for purposes of medical malpractice law

    Screening of Non- Saccharomyces cerevisiae Strains for Tolerance to Formic Acid in Bioethanol Fermentation.

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    Formic acid is one of the major inhibitory compounds present in hydrolysates derived from lignocellulosic materials, the presence of which can significantly hamper the efficiency of converting available sugars into bioethanol. This study investigated the potential for screening formic acid tolerance in non-Saccharomyces cerevisiae yeast strains, which could be used for the development of advanced generation bioethanol processes. Spot plate and phenotypic microarray methods were used to screen the formic acid tolerance of 7 non-Saccharomyces cerevisiae yeasts. S. kudriavzeii IFO1802 and S. arboricolus 2.3319 displayed a higher formic acid tolerance when compared to other strains in the study. Strain S. arboricolus 2.3319 was selected for further investigation due to its genetic variability among the Saccharomyces species as related to Saccharomyces cerevisiae and availability of two sibling strains: S. arboricolus 2.3317 and 2.3318 in the lab. The tolerance of S. arboricolus strains (2.3317, 2.3318 and 2.3319) to formic acid was further investigated by lab-scale fermentation analysis, and compared with S. cerevisiae NCYC2592. S. arboricolus 2.3319 demonstrated improved formic acid tolerance and a similar bioethanol synthesis capacity to S. cerevisiae NCYC2592, while S. arboricolus 2.3317 and 2.3318 exhibited an overall inferior performance. Metabolite analysis indicated that S. arboricolus strain 2.3319 accumulated comparatively high concentrations of glycerol and glycogen, which may have contributed to its ability to tolerate high levels of formic acid

    A Very Sensitive 21cm Survey for Galactic High-Velocity HI

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    Very sensitive HI 21cm observations have been made in 860 directions at dec >= -43deg in search of weak, Galactic, high-velocity HI emission lines at moderate and high Galactic latitudes. One-third of the observations were made toward extragalactic objects. The median 4-sigma detection level is NHI = 8x10^{17} cm^-2 over the 21' telescope beam. High-velocity HI emission is detected in 37% of the directions; about half of the lines could not have been seen in previous surveys. The median FWHM of detected lines is 30.3 km/s. High- velocity HI lines are seen down to the sensitivity limit of the survey implying that there are likely lines at still lower values of NHI. The weakest lines have a kinematics and distribution on the sky similar to that of the strong lines, and thus do not appear to be a new population. Most of the emission originates from objects which are extended over several degrees; few appear to be compact sources. At least 75%, and possibly as many as 90%, of the lines are associated with one of the major high-velocity complexes. The Magellanic Stream extends at least 10 deg to higher Galactic latitude than previously thought and is more extended in longitude as well. Although there are many lines with low column density, their numbers do not increase as rapidly as NHI^-1, so most of the HI mass in the high-velocity cloud phenomenon likely resides in the more prominent clouds. The bright HI features may be mere clumps within larger structures, and not independent objects.Comment: 88 pages includes 22 figures Accepted for Publication in ApJ Suppl. June 200

    Role of LAG-3 in Regulatory T Cells

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    AbstractRegulatory T cells (Tregs) limit autoimmunity but also attenuate the magnitude of antipathogen and antitumor immunity. Understanding the mechanism of Treg function and therapeutic manipulation of Tregs in vivo requires identification of Treg-selective receptors. A comparative analysis of gene expression arrays from antigen-specific CD4+ T cells differentiating to either an effector/memory or a regulatory phenotype revealed Treg-selective expression of LAG-3, a CD4-related molecule that binds MHC class II. Antibodies to LAG-3 inhibit suppression by induced Tregs both in vitro and in vivo. Natural CD4+CD25+ Tregs express LAG-3 upon activation, which is significantly enhanced in the presence of effector cells, whereas CD4+CD25+ Tregs from LAG-3−/− mice exhibit reduced regulatory activity. Lastly, ectopic expression of LAG-3 on CD4+ T cells significantly reduces their proliferative capacity and confers on them suppressor activity toward effector T cells. We propose that LAG-3 marks regulatory T cell populations and contributes to their suppressor activity

    HILT : High-Level Thesaurus Project M2M Feasibility Study : [Final Report]

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    The project was asked to investigate the feasibility of developing SOAP-based interfaces between JISC IE services and Wordmap APIs and non-Wordmap versions of the HILT pilot demonstrator created under HILT Phase II and to determine the scope and cost of the provision of an actual demonstrator based on each of these approaches. In doing so it was to take into account the possibility of a future Zthes1-based solution using Z39.50 or OAI-PMH and syntax and data-exchange protocol implications of eScience and semantic-web developments. It was agreed that the primary concerns of the study should be an assessment of the feasibility, scope, and cost of a follow-up M2M pilot that considered the best options in respect of: o Query protocols (SOAP, Z39.50, SRW, OAI) and associated data profiles (e.g. Zthes for Z39.50 and for SRW); o Standards for structuring thesauri and thesauri-type information (e.g. the Zthes XML DTD and SRW version of it and SKOS-Core2); The study was carried out within the allotted timescale, with this Final Report submitted to JISC on 31st March 2005 as scheduled. The detailed proposal for a follow-up project is currently under discussion and will be finalised – as agreed with JISC – by mid-April. It was concluded that an M2M pilot was feasible. A proposal for a follow-up M2M pilot project has been scoped, and is currently being costed

    Small Deletions of SATB2 Cause Some of the Clinical Features of the 2q33.1 Microdeletion Syndrome

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    Recurrent deletions of 2q32q33 have recently been reported as a new microdeletion syndrome. Clinical features of this syndrome include severe mental retardation, growth retardation, dysmorphic features, thin and sparse hair, feeding difficulties and cleft or high palate. The commonly deleted region contains at least seven genes. Haploinsufficiency of one of these genes, SATB2, a DNA-binding protein that regulates gene expression, has been implicated as causative in the cleft or high palate of individuals with 2q32q33 microdeletion syndrome. In this study we describe three individuals with smaller microdeletions of this region, within 2q33.1. The deletions ranged in size from 173.1 kb to 185.2 kb and spanned part of SATB2. Review of clinical records showed similar clinical features among these individuals, including severe developmental delay and tooth abnormalities. Two of the individuals had behavioral problems. Only one of the subjects presented here had a cleft palate, suggesting reduced penetrance for this feature. Our results suggest that deletion of SATB2 is responsible for several of the clinical features associated with 2q32q33 microdeletion syndrome

    Presidents, Assembly Dissolution and the Electoral Performance of Prime Ministers

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    Many European presidents have extensive constitutional powers to affect the timing of early parliamentary elections, which enables them to influence when incumbent governments must face the electorate. This paper examines whether presidents use their assembly dissolution powers for partisan benefit. To date, presidential activism in the electoral arena of parliamentary and semi-presidential democracies remains poorly understood. We hypothesize that presidents use their powers to influence election calling for the advantage of their political allies in government. To test this argument, we use data on 190 elections in eighteen European democracies. Our results suggest that presidents with significant dissolution powers are able to shape the electoral success of incumbents. Prime ministers whose governments are allied to such presidents realize a vote and seat share bonus of around five per cent. These findings have implications for our understanding of presidential activism, strategic parliamentary dissolution and electoral accountability
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