Unraveling the physics of DNA's double helix
...forces that stabilize DNA." In a study published online by Physical Review Letters on July 5, Marszalek's team reports the first direct measurements of the forces within single strands of DNA that wind around each other in pairs to form the complete, double-stranded molecules. The work was supported by th...JCI table of contents: July 12, 2007
...t to be estrogen independent. In a study appearing online on July 12 in advance of publication in the August...enting recurrent blood clots. In a study appearing online on July 12 in advance of publication in the August print issue of the Journal of Clinical Investigat...Cells take risks with their identities
... given cell. According to the study, which appears online in Cell on July 12, these genes begin making RNA templates for proteinsa process termed transcriptionbut fail to finish. The templates never materialize, and the proteins never appear. Surprisingly, about one-third of our genes, including all the r...Bernese Mountain Dogs prone to Borrelia burgdorferi infection
...ntain Dogs, according to research published in the online open access journal BMC Veterinary Research. Swiss researchers found that more than half of the dogs they tested were infected with the spiral-shaped bacteria, which are passed on by ticks and can also cause Lyme disease in humans. Dr Bernhard Ger...Sour taste make you pucker? It may be in your genes
...l sensory psychologist. In the study, published online in advance of print in the journal Chemical Senses, researchers tested 74 pairs of monozygotic (MZ, identical) twins and 35 pairs of dizygotic (DZ, fraternal) twins to determine the lowest concentration needed for each twin to correctly identify a ci...Brightly colored birds most affected by Chernobyl radiation
...cologists have discovered. The findings published online in the British Ecological Society's Journal of Applied Ecology help explain why some species are harder hit by ionising radiation than others. Dr Anders Mller of the Universit Pierre et Marie Curie and Professor Timothy Mousseau of the University ...Researchers use new approach to predict protein function
In a paper published online this month in the journal Nature Chemical Biology, researchers report that they have developed a way to determine the function of some of the hundreds of thousands of proteins for which amino acid sequence data are available, but whose structure and ...A stepwise retreat: How immune cells catch pathogens
...hese tentacles in three dimensions. In the current online issue of PNAS they describe a molecular mechanism that likely underlies the tentacle movement and that could influence the design of new nanotechnologies. The long cell protrusions that macrophages use as tentacles to go fishing for pathogens are c...... An advanced version of their paper will be posted online at www.genesdev.org . Drs. OCarroll, Tarakhovsky and colleagues generated transgenic mice harboring mutated versions of Ago2 in their bone marrow. The researchers found that Ago2 is, indeed, quite necessary for normal blood cell development. Its ...Kaposi sarcoma arises independently from multiple cells
...from a single cell, according to a study published online July 10 in the Journal of the National Cancer Institute . Kaposi sarcoma, which is often associated with AIDS, primarily affects the skin. But as the disease progresses, it can move to the lymph nodes and internal organs as well. Renan Duprez,...FDA finds no strong link between tomatoes and reduced cancer risk
...certain cancers, according to an article published online July 10 in the Journal of the National Cancer Institute . Several studies have reported an association between the consumption of tomatoes or lycopene, an antioxidant that gives tomatoes their red hue, and a decreased risk of some cancers, partic...Modified herpes virus keeps arteries 'free-flowing' following procedures
...ents, according to research published early in the online edition of PNAS (Proceedings of the National Academy of Sciences of the United States of America). Christopher Skelly, MD, assistant professor of vascular surgery at the University of Chicago Medical Center, and the studys lead author says, One of ...Wiley extends publishing partnership with the American Institute of Chemical Engineers
...lisher, to accomplish on our own. We have enhanced online features and a complete digital archiveall accompanied by stronger financial performance. Were thrilled to be able to extend a partnership that has been and continues to be successful on so many levels, said Jon Glover, Wiley Associate Publisher, P...Tomorrow's green nanofactories
... to the NanoFrontier. These podcasts are available online at www.penmedia.org/podcast , or directly from Apples iTunes music store. These podcasts and a recent publication, NanoFrontiers: Visions for the Future ( www.nanotechproject.org/114 ), are written by freelance science writer Karen F. Schmidt. Bot...Neutral evolution has helped shape our genome
... Describing their contributions to genetic drift online in PLoS Genetics, Katsanis says the Hopkins experiments demonstrate that one of the major architectural markers of the human genome, DNA repeat elements that make up over 40 percent of our genome, rose to prominence without offering any benefits to t...'Virtual' mouse brains now available online
...cation in the research journal NeuroImage. View it online at http://tinyurl.com/2upj7n . Images on the website for Duke's Center for In Vivo Microscopy http://www.civm.duhs.duke.edu/ , which Johnson directs, reveal examples of these innovations in action. In one video two different mouse brains -- one ...New way to target and kill antibiotic-resistant bacteria found
...biophysics at UNC-Chapel Hill. The study appears online the week of July 9, 2007, in the Proceedings of the National Academy of Sciences. Funding was provided by the National Institutes of Health. The study provides a new weapon in the battle against antibiotic-resistant bacteria, which represent a ser...UCSB researchers show how to make polymeric micro- and nanoparticles
...le function. Their research is published in todays online edition of the Proceedings of the National Academy of Sciences. Polymeric micro- and nanoparticles are used in a wide range of applications including medical imaging, drug delivery, and beauty and personal care products. These applications typica...Invisible gases form most organic haze in urban, rural areas
...is Jimenez. The study was published in the July 7 online issue of Geophysical Research Letters. The scientists compared concentrations of directly emitted, or primary, aerosols with chemically formed, or secondary aerosols. They surveyed urban areas, areas downwind of urban areas and rural areas from 3...