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Tag: "extensively" at biology news

New findings challenge established views on human genome

... molecules, called RNA, and that these transcripts extensively overlap one another. This broad pattern of transcription challenges the long-standing view that the human genome consists of a relatively small set of discrete genes, along with a vast amount of so-called junk DNA that is not biologically active. ...

WHO data confirms low level of resistance to Tamiflu

... resistance to Tamiflu is very low, even when used extensively in the management of seasonal influenza," commented Dr. David Reddy, Pandemic Task Force Leader, Roche. "This provides reassurance to the scientific community that since the introduction of Tamiflu in 1999, the levels of resistance have remained sim...

DNA-damage test could aid drug development

...ething useful with it," says Lodish, whose lab has extensively studied the process by which red blood cells are generated. Shuga first worked with postdoctoral researcher Jing Zhang in the Lodish lab to adapt techniques from an established cell-culture system based on mouse fetal liver cells to create a new syst...

Study suggests some drug resistance to influenza B medications

... where zanamivir and oseltamivir are now used more extensively than anywhere else in the world. In the winter of 2004-2005, an influenza B virus caused a widespread epidemic in Japan, creating an opportunity to assess the effectiveness of neuraminidase inhibitors. The researchers collected influenza B isolates f...

Imaging pinpoints brain regions that 'see the future'

...ental images of past experiences, has been studied extensively for more than a hundred years. But until recently, there's been surprisingly little research into cognitive processes underlying another form of mental time travel -- the ability to clearly imagine or "see" oneself participating in a future event. ...

OHSU surgeon implants donated tissue allografts

...nors came from. The fresh cartilage allografts are extensively tested to assure bacteria and viral free grafts are provided to surgeons specializing in cartilage restoration surgery. Tissues can be maintained for up to 28 days in a medium that keeps the cells viable and the tissue healthy so it continues to live...

Misclassified for centuries, medicinal leeches found to be 3 distinct species

...available European medicinal leeches also are used extensively by biomedical researchers studying biological processes such as blood coagulation, developmental genetics and neurobiology. Studies of commercial specimens have figured prominently in the discovery and production of anticoagulants and protease inhibi...

Stem cells act through multiple mechanisms to benefit mice with neurodegenerative disease

...d neural stem cells, which migrated and integrated extensively throughout the brain, did much more than replace brain tissue destroyed by the disease. Some of the transplanted cells replaced damaged nerve cells and transmitted nerve impulses, offering the first evidence that stem cell-derived nerve cells may int...

Twin studies reveal genetic components leading to cardiac and kidney disease

...ood samples from more twin pairs, in order to more extensively map genetic components that lead to increased risk of disease. CRP and Heart Disease For example, by studying twins, O’Connor’s team has identified three genes that are correlated with systemic inflammation. This study indicates a strong eff...

The subtleties of tropical forest demise

...ennium' by Time Magazine and CNN Network. He works extensively in the Brazilian Amazon. About the Book William F. Laurance and Carlos A. Peres, editors (2006) Emerging Threats to Tropical Forests. University of Chicago Press, Chicago, 530 pages. Price: $40 (softcover), $110 (hardcover)....

HIV/AIDS linked to extensively drug resistant TB

...nce of multi-drug resistant (MDR) tuberculosis and extensively drug-resistant (XDR) tuberculosis in a hospital in KwaZulu Natal. Between January 2005 and March 2006, sputum samples from 1,539 patients were screened. MDR TB was found in 221 patients and of those, 53 had XDR TB. Those patients with XDR who were te...

Mutant mouse provides insights into breast cancer

...int issue), the Cornell geneticists report that by extensively testing hundreds of mice pedigrees, they found a mutant line of mice called Chaos3 that had a 20-fold increase in a hallmark for cancer called genomic instability -- a blanket term for an elevation in the number of mutations, chromosomal aberrations ...

World-wide warning of highly drug-resistant tuberculosis

...nd of those, 24% met the exact definition of being extensively drug resistant tuberculosis (also referred to as X... 53 died after an average of 25 days. Strains of extensively drug resistant tuberculosis have also been noted in Europe, Asia and North and South America. It app...

Blood transfusion-transmitted infections: A global perspective

...transfusion-transmitted infections will be debated extensively over the next few years," says Blajchman. "Regardless of the outcomes of these debates it is clear that the risk of transmission is not static. As new agents continue to emerge, old ones change their properties and epidemiologic patterns, and new...

Surprising symbiosis: Glassy-winged sharpshooter eats with friends

...rizona evolutionary biologist Nancy Moran, who has extensively studied the co-evolution of insects and their resident bacteria, recruited Eisen to the current project. "My initial interest in sharpshooter symbiosis was in the hope that we could find out exactly how xylem can be used as food," Moran explains. "It...

UCI scientists find chlorine may contribute to ozone formation

...fect ozone chemistry." This study is the first to extensively measure atmospheric chlorine in Southern California air over several consecutive weeks. Researchers made extremely sensitive chlorine measurements, detecting the chemical at levels as low as three parts per trillion. Results showed that chlorine is ...

Making a face: A new and earlier marker of neural crest development

...l crest is a population of stem cells that migrate extensively during development and give rise to many derivatives, including most of the bone and cartilage of the head skeleton, pigment cells of the skin, and cells of the peripheral nervous system. In humans, cleft palate, heart valve malformations and vario...

Creating a window on 'oceans in motion'

... sea. Salmon and many other marine animals travel extensively along shelves. A pilot array has been successfully demonstrated by the British Columbia-based Project POST (Pacific Ocean Shelf Tracking), part of the international Census of Marine Life. The current array stretches more than 1,750 km, from Oregon...

Pesticides in the nation's streams and ground water

...(EPA) during the 10-year study. EPA uses the data extensively in their exposure and risk assessments for regulating the use of pesticides. For example, EPA used USGS data in its risk assessments for the reevaluation of diazinon, chlorpyrifos, cyanazine and alachlor. Uses of three of these pesticides (diazinon,...

'Word-vision' brain area confirmed

...ferent results. "Although we studied reading more extensively than the perception of other types of visual stimuli, our patient presented a clear-cut reading impairment following surgery, while his performance remained flawless in object recognition and naming, face processing, and general language abilities," ...

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