Manganese levels increase in scrapie-infected sheep before clinical symptoms develop
...actice, however, it would be difficult implement a widespread screening programme, given that the mass spectrometry we use to measure levels is expensive and labour intensive. The research builds on the 2002 discovery that mice infected with scrapie have higher levels of manganese. This is the first time that...Global warming is evaporating Arctic ponds, new study shows
...24 co-authors, used similar techniques to document widespread ecological changes, consistent with warming, across the circumpolar Arctic. However, the ecological changes recorded in the 1994 study pale in comparison to those noted in the current paper, where some sites had completely dried up by July. Wh...Wood ant queen has no egg-laying monopoly
...unfertilized male eggs even if they cannot mate is widespread in social insects, such as bees, wasps, and ants. However, worker reproduction as frequent as observed in Formica is exceptional, especially in colonies this large. Wood ant colonies range in size from several hundred to hundreds of thousands of work...Scientists close in on missing carbon sink
... release carbon into the atmosphere as a result of widespread logging, burning, and other forms of clearing land. The new research indicates, instead, that tropical ecosystems are the net source of only about 100 million tons of carbon, even though tropical deforestation is occurring rapidly. "Our results ind...Northern forests less effective than tropical forests in reducing global warming
... release carbon into the atmosphere as a result of widespread logging, burning and other forms of clearing land. The new research indicates, instead, that tropical ecosystems are the net source of only about 100 million tons, even though tropical deforestation is occurring rapidly. "Our results indicate tha...News tips from the Journal of Neuroscience
... in cells of interest. GLAST promoter activity was widespread early in development but tapered off after birth, with some interesting exceptions such as radial glia and white matter oligodendrocytes. In contrast, GLT-1 promoter activity was present in virtually all astrocytes, but it was higher in forebrain tha...Potato wart eyed as risk to potato production
...ato late blight, the plant disease responsible for widespread potato shortages, the lesser known potato wart has the potential to be as devastating to economies that depend on potato production, say plant pathologists with The American Phytopathological Society (APS). According to Gary Franc, plant pathologi...The kapok connection -- Study explains rainforest similarities
...n for plywood," Dick said. "It might be saved from widespread extinction by continuing to invade new land areas through oceanic dispersal."...Other highlights from the June 6 JNCI
...itous expression of integrin 7 in human organs and widespread mutations of this gene in human cancers raise the possibility that integrin 7 may have a role in the development of many human malignancies, the authors write. Contact: Jim Swyers, University of Pittsburgh, swyersjp@upmc.edu , (412) 586-9773 ...Furry-clawed Asian crabs found in Delaware and Chesapeake Bays
...bs, first reported in the Chesapeake Bay, are more widespread than initially thought. Four crabs have now been caught in Delaware Bay during the last week of May 2007, and may occur in other waters of the U.S. east coast. In total, seven adult male mitten crabs have been documented from the two bays since 200...GM field trials 'underestimate potential for cross-pollination'
...nd sites. 'If the production of GM crops becomes widespread in Europe, it is essential that measures are taken to minimise cross-pollination from GM to conventional non-GM crops,' said Hoyle. 'The recommended minimum distances between GM and conventional crops should be informed by weather data, which is poss...Common cancer gene sends death order to tiny killer
...ng for missing miR-34a in other cancers. If it's a widespread phenomenon, the work could lead to treatments that aim to restore the missing microRNA to cancer cells. ...Evolution of animal personalities
...tly has it become evident that personalities are a widespread phenomenon in the animal kingdom. Animals as diverse as spiders, mice and squids appear to have personalities. Personality differences have been described in more than 60 species, including primates, rodents, birds, fish, insects and mollusks. New w...New mouse model closely mimics human cancers
...es breaking apart and reattaching, which result in widespread abnormalities like missing genes or extra copies of genes some of which are essential to the tumors formation. In the current study, the scientists used gene knockouts to create mice whose cells lacked crucial molecules whose role is to guard the g...UGA study reveals function of ubiquitous yet poorly understood microorganisms
..., China and Russia for crenarchaeota and found the widespread distribution of the presumed amoA genes, which microorganisms use to combine ammonia with oxygen, releasing useable energy. Previous studies by other teams used a DNA-based forensic ecology approach to suggest crenarchaeotas role in converting ammoni...K-State biologist hopes mosquito can break viral chain
...e said. In the Western Hemisphere, A. aegypti is widespread in Latin America but occupies only bits of the southern United States, particularly south Florida. The species has made a comeback since eradication programs ended in the 1970s, and dengue fever has expanded along with it. In Kansas, Culex tarsalis...Repair of DNA by Brca2 gene prevents medulloblastoma
...rvous system in mice, the loss of this gene led to widespread apoptosis, or cell suicide, triggered by the cells inability to repair DNA damage. This reduced the size of the cerebellum, led to malformation in the shape of the brain and disrupted the movement of certain nerves cells that normally migrate through...2007 Joint Assembly in Acapulco -- press conference schedule
...co and potential ways to mitigate it, evidence for widespread fungicide contamination of U.S. streams, and new understanding of radionuclide buildup in acquifers. Participants Ron Fuge: Senior Research Associate, Institute of Geography and Earth Sciences, University of Wales, Aberystwyth, U.K.; Avner Ve...Study of unexplained respiratory infections leads researchers to new virus
.... Other previously identified polyoma viruses are widespread in the general population, where they typically produce no symptoms. Scientists have shown in animal models that they can produce multiple tumors, but they are still not certain if the viruses can have the same effects in humans. In patients with im......s between the sexes, and such sexual dimorphism is widespread in the animal kingdom," says Jonathan B. Losos, professor of organismic and evolutionary biology in Harvard's Faculty of Arts and Sciences and curator in herpetology at the Harvard Museum of Comparative Zoology. "Evolutionary biologists have studied ...