described 2 8

Tag: "described" at biology news

The structure of a virus infecting bacteria resembles a human virus

... to study using dangerous human viruses. The newly described structure of the bacteriophage furthers researchersâ?super>TM understanding of how the particles of the double-stranded RNA virus are formed in the host cell. However, it is still unclear how the virus distinguishes itsâ?super>TM own geneti...

Montreal researchers identify defects of immune cells

...infection and, eventually, preventing it. They are described in an article of the July 1st issue of The Journal of Immunology. Oral and esophageal Candida albicans infections, which often affect individuals infected with HIV, may limit food consumption and lead to weight loss, threatening patients' general he...

Device effective in zapping the pain out of migraines

..., interrupts the aura phase of the migraine, often described as electrical storms in the brain, before they lead to headaches. Auras are neural disturbances that signal the onset of migraine headaches. People who suffer from migraine headaches often describe "seeing" showers of shooting stars, zigzagging lines...

RNA interference stops colon cancer spread in mice

...atory mice. Small interfering RNAs (siRNAs), first described in 2001, are tiny bits of genetic material that can prevent the translation of genes into proteins -- including specific proteins involved in biochemical reactions that promote cancer and other diseases. According to the federal Centers for Disease ...

Studies suggest new brain protein may help in treating schizophrenia, insomnia and anxiety

...ed finding the new neuropeptide just last year and described animal studies showing how binding of NPS to its receptors on the surfaces of neurons promotes strong arousal, suppresses all phases of sleep and lessens anxiety in stressful or unfamiliar situations. Now, at ICN 2006, Dr. Reinscheid's group report...

Mitochondrial DNA sequencing tool updated

... quarter of their cytoplasm. Sometimes informally described as "cellular power plants," mitochondria convert organic materials into ATP, the cell's energy currency and without which life would cease. As early as the 1920s, scientists uncovered clues that mitochondria might play a role in causing cancer. ...

Purdue creates new low-cost system to detect bacteria

...tern against a template that contains 120 features described by Zernike polynomials. "A good analogy is the method used by law enforcement to identify a person's face using specialized recognition software," Rajwa said. "You could describe the face as being made up of a combination of geometric shapes, like ...

Malaria, potato famine pathogen share surprising trait

...ies conducted by the Northwestern researchers that described the leader sequence of the malaria parasite. The similarity between this and the leader sequence of P. infestans was remarkable, he said. "So we decided to collaborate and see if the sequences were not just similar, but also functionally the same," ...

Polymers show promise for lab-on-a-chip technology

...and the first author of the paper. LCPs are often described as "artificial muscles" that can convert thermal, chemical and electromagnetic stimuli into mechanical energy, Elias said. LCPs are polymers made from liquid crystalline molecules, which are well-known for their use in display applications, such as l...

Brittle prions are more infectious

...onformations. A similar strain phenomenon has been described for mammalian prions. More generally, even in noninfectious diseases involving protein misfolding, like Alzheimer's and Parkinson's diseases, the same protein can misfold into more than one shape with some forms being toxic and others benign. However...

Pigeons provide clue to solving common problem in heart patients

...ients. This process, known as restenosis, has been described as "over exuberant" tissue healing and involves the smooth muscle cells. It is not known why this happens in some people and not in others, but many scientists believe that genes are to blame, Wagner said. The researchers sought to find the answer ...

Afghanistan to protect wildlife and wild lands

...avelers along the silk routes to east Asia and who described the giant sheep in his writings in the late 13th Century. Other mammals known to occur in Afghanistan include the ibex, the Persian leopard, gazelles, and the elusive snow leopard. Specifically, five areas being considered by this project for protec...

Knowledge of infection may prevent spread of herpes virus

...xual partners." The importance of this finding is described by editorialists Edward Hook III, MD, of the University of Alabama at Birmingham and Peter Leone, MD, of the University of North Carolina at Chapel Hill as one of three effective tools to prevent the spread of this sexually transmitted disease (STD)....

APS lecturer shows rare video of 'teacher-student' immune cell interactions in live animal

...tream. May lead to vaccines "The events I have described are at the heart of any vaccination," von Andrian said. Many pathogens take advantage of the lymph system to gain access to the body, he noted, including pathogens used in biological warfare, such as anthrax, or yersinia pestis, the agent that causes...

Oxidation defense in mosquitoes benefits malaria parasite

...minase-mediated reactions," said Li. The protein described in the PNAS article is responsible for this transforming of 3-HK into XA in the malaria vector Anopheles gambiae, where XA also helps the malarial parasite reproduce. So stopping the oxidative defense could stop the parasite as well as make the insec...

New method for identifying microbes

...g in an unknown "microbial community." The method, described in the March 2006 issue of Applied Environmental Microbiology, has many applications -- from assessing the microbes present in environmental samples and identifying species useful for cleaning up contamination to identifying pathogens and distinguish...

New method enables gene disruption in destructive fungal pathogen

...or of the paper, said, "The high throughput system described in this study should allow for the systematic analysis of large sets of candidate genes in A. brassicicola, such as those encoding cell-wall-degrading enzymes and other genes of interest in pathogen-plant interactions." The new gene disruption metho...

Illegal trade is propelling rare turtle toward extinction, new report

...ly in the wetlands of the island of Roti was first described as a new species in 1994. The report found that poachers are sidestepping regulations and smuggling the turtles to Jakarta where they are then sold illegally and, according to dealers, end up in Japan, Western Europe or the United States. The r...

One fish, two fish: New MIT sensor improves fish counts

...nd seeing only one pixel. The new sensor system, described in the Feb. 3 issue of Science, could allow government agencies to figure out what's really happening to fish populations, which many environmentalists and scientists believe are in rapid decline. "The world's fish stocks are being depleted at a hor...

UCLA paper examines how one disease may prevent another

...l applications. A few of the pairings that Stiehm described include: Sickle cell disease and malaria. In 1948, British biologist J.B. Haldane proposed that malaria was an evolutionary force for selecting malaria-resistant genes. He suggested that those carrying the gene for sickle cell anemia were better a...

1 2 3 4 5 6 7 8 9 10