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Tag: "techniques" at biology news

Man and mouse share genome structures

...tein and Schreiber began to develop the analytical techniques several years earlier, working with the smaller yeast genome. To investigate the much larger human genome, they collaborated with Affymetrix. They isolated the DNA regions with certain major methyl and acetyl tags, and used new microarray technology ...

W.M. Keck Foundation funds study of friendly microbes

...e Keck Foundation, the researchers will create new techniques for harvesting microbial communities along the length of the intestine and sequencing the genomes of new species, without having to culture them in test tubes. They are also developing new computational methods for mining genome sequence data so tha...

Yellowstone microbes fueled by hydrogen, according to U. of Colorado study

...me environments."Instead of relying on traditional techniques of microbiology thatutilize cultures grown in the lab, the CU-Boulder team used methodologydeveloped by Pace to genetically analyze the composition of themicrobial community as it appeared in the field. "We didn't look atwhat grows in a culture dish,...

Plants respond similarly to signals from friends, enemies

... Using high-tech microscopy and florescent imaging techniques that allow for real-time, three-dimensional study in living cells over time, the NC State researchers discovered that the model legume Lotus japonicus responded similarly to signals from both rhizobia, the friends that fix nitrogen for the plant, and...

Learning to fight an adversary that won't stay down

...Ironically, he says, advances in molecular biology techniques have shown just how adept these pathogens are at adapting to anything we can throw at them. Innovations such as highly efficient polymerase chain reaction (PCR) have made it possible to identify and study the many genes responsible for antibiotic res...

The secret lives of whales

...anford University. Palumbi has applied new genetic techniques to penetrate over a million years of whale history dating back to the middle of the last series of Ice Ages. Using whale samples from the Japanese meat market, where Antarctic minke whales killed for “scientific research?are legally sold as food, Pa...

Researchers reveal the infectious impact of salmon farms on wild salmon

...reaks in wild salmon. The study combined new field techniques that allowed comprehensive, individual observation... The scientists developed new, non-lethal sampling techniques that allowed them to examine thousands of the fish for parasites, taking measurements every 2 to 4 k...

New Clues Add 40,000 Years to Age of Human Species

...n Ethiopia. By applying modern radiometric dating techniques and a careful study of sediments and fossils, the researchers linked the Omo hominids, true Homo sapiens, to a single period in time. “Some have considered Omo I to be more ‘modern?in appearance,?says Mark Weiss, the NSF officer who oversaw this re...

New imaging method gives early indication if brain cancer therapy is effective, U-M study shows

...iffusion map predicted 10 weeks before traditional techniques if the tumor was responding to the chemotherapy or radiation therapy. This has potential to spare patients from weeks of a grueling treatment regimen that's not working and gives doctors the opportunity to switch patients early on to a therapy that m...

Poplar trees redirect resources in response to simulated attack

... National Laboratory have applied some of the same techniques used in medical imaging to track the distribution ...back to life once the attack has passed. Using the techniques developed at Brookhaven, we now have a way to find out." To simulate an insect attack, the scientis...

Purdue proves concept of using nano-materials for drug discovery

...reated the device with the same "microfabrication" techniques used to make computer chips. The reactors range in diameter from about 400 to 60 microns, or millionths of a meter. Human hairs are about 100 microns wide. "You can think of it as a micro-petri dish for studying biochemical reactions," Lee said. Th...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

... lab of Stuart Schreiber. Together they worked out techniques to examine the way genes are packaged in yeast. To go from yeast to humans required a technological breakthrough, however. "Most prior studies involved only single genes, but we wanted to investigate entire chromosomes, which contain hundreds of gen...

Researchers trace evolution to relatively simple genetic changes

...t gene, the research team used genetic engineering techniques to insert the armor-controlling gene into fish "that are normally missing their armor plates. And that puts the plates back on the sides of the fish," Kingsley said. "So, this is one of the first cases in vertebrates where it's been possible to trac...

Octopuses occasionally stroll around on two arms, UC Berkeley biologists report

...t gene, the research team used genetic engineering techniques to insert the armor-controlling gene into fish "that are normally missing their armor plates. And that puts the plates back on the sides of the fish," Kingsley said. "So, this is one of the first cases in vertebrates where it's been possible to trac...

Alcohol's effects on gene expression in the central nervous system

...e the rewarding effects of alcohol." # Microarray techniques confirmed earlier reports indicating that chronic alcohol exposure/withdrawal differentially alters gene expression in the prefrontal cortex of mice. More than 300 genes were found to be altered by acute alcohol treatment. "The prefrontal cortex is ...

MSI releases 'moleculizer' - a new approach to simulation of intracellular biochemical networks

...adapting andcreatively extending earlier developed techniques for stochasticallysimulating chemical reactions so that they can be used to study realcellular systems, where the huge numbers of potential species andreaction channels makes things very difficult."Computer simulations can be powerful tools in contem...

Gene vaccine for Alzheimer's disease shows promising results

...udy was the first stepto see if we can apply these techniques to create a safe and effectiveAlzheimer's vaccine." Said Dr. Rosenberg: "When we vaccinated the micewith the mouse form of the amyloid gene, they made lots of antibodieswithout stimulating cytotoxic T cells. When we get to human studies, wehope to sh...

Scientists identify molecular events that drive cell senescence

...udy was the first stepto see if we can apply these techniques to create a safe and effectiveAlzheimer's vaccine." Said Dr. Rosenberg: "When we vaccinated the micewith the mouse form of the amyloid gene, they made lots of antibodieswithout stimulating cytotoxic T cells. When we get to human studies, wehope to sh...

Novel ultrafast laser detection of cancer cells also may improve understanding of stem cells

... we can see them immediately by light alone." The techniques could be critical to advancing early detection, diagnosis, and treatment of disease. More technically put, "To rapidly assess the health of a single mammalian cell," says Gourley, "the key discovery was the elucidation of biophotonic differences in ...

New research indicates a 'troubled' greenhouse is brewing

...ality and rainfall in soils, then applied the same techniques to buried soils spanning the ancient greenhouse event. "This is known to have been a time of high atmospheric carbon dioxide from studies of the breathing pores in fossil leaves," he explains. "At that time, Wyoming warmed from a mean annual tempera...

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