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Tag: "technique" at biology news

Noise And Delays Explain Why Some Genes Oscillate In Activity

...ral cognitive functioning. The researchers used a technique called positron emission tomography, or PET, to gain insight into CX717's neurobiological role. The PET signal reflected the distribution and rate of metabolism of ingested radioactively labeled glucose in the monkeys' brain cells. By measuring regio...

New brain scan technology could save babies' lives

...anner of its kind in the world, uses an innovative technique called optical tomography to generate images showing how the brain is working. In optical tomography, light passes through body tissue and is then analysed by computer to provide information about the tissue. A helmet incorporating 32 light detecto...

Microarray technology for tailoring breast cancer therapy

...uvant treatments. The researchers suggest that the technique of DNA microarray analysis could be developed to help breast cancer patients who do not benefit from adjuvant therapy, and avoid painful unnecessary treatments and wastage of healthcare resources. ...

Scientists sequence DNA of woolly mammoth

...ombination with a novel high-throughput sequencing technique that could cope with the heavily fragmented DNA retrieved from the organism's mandible, its jaws. The bone material used in this study is approximately 28,000 years old, as was shown by beta-carbon dating analysis. This was a surprising finding, as...

Leading lampreys to slaughter: Pheromone for scourge of Great Lakes identified

... goal of controlling lamprey with a new and better technique by 2010. This could be it," said Peter Sorensen, a professor of fisheries, wildlife and conservation biology who led the study with chemistry professor Thomas Hoye. "Also, lamprey are important to native peoples on the West Coast, who value it for fo...

Scientists narrow the time limits for the human and chimpanzee split

... Sciences. The team describes its new statistical technique as a "multifactor bootstrap-resampling approach." Penn State evolutionary biologists Alan Walker and Blair Hedges also took part in the collaborative effort. The team examined 167 different gene sequence sets from humans, chimpanzees, macaques, and...

Jefferson scientists identify gene defect leading to abnormal skin development and cancer

... goal of controlling lamprey with a new and better technique by 2010. This could be it," said Peter Sorensen, a professor of fisheries, wildlife and conservation biology who led the study with chemistry professor Thomas Hoye. "Also, lamprey are important to native peoples on the West Coast, who value it for fo...

Scientist uses form to explain function of key building blocks of life

...am used nuclear magnetic resonance spectroscopy, a technique that allowed them to observe signals from atoms in the proteins, to determine the strength of hydrogen bonds in ten different variants of the protein. From that data, the team was able to explain changes in protein function. "In science, you try to...

DNA technique measures suitability of soil for onion crops

...ningen) the company Blgg has developed a molecular technique to detect the stem nematode and white rot in soil ...ion of DNA from nematodes, forms the basis for the technique developed to detect harmful nematodes. The Technology Foundation STW filed a patent for this technol...

Olfactory system detects pheromones that control reproduction

...el neurons with a fluorescent protein marker. This technique relied on a conditional approach that caused the pseudorabies virus to replicate only when it was triggered by a specific genetic signal. The researchers also created a transgenic mouse in which neurons expressing LHRH provided that signal, making th...

Engineered Stem Cells Show Promise For Sneaking Drugs Into The Brain

...One hurdle that needs to be overcome before such a technique could be attempted in human patients, says Svendsen, is developing a method to switch transplanted cells on or off and thus control their drug delivery capabilities. Working with engineered cells in culture, the Wisconsin group found they could switc...

Researchers make long DNA 'wires' for future medical and electronic devices

...circuits as they produce chip circuits today. The technique that Lee and Guan used is similar to a relatively ...perties of the DNA wires. They are also using this technique to produce DNA-based nanoparticles for gene delivery. ...

Young scientists turn to gel to ease side-effects of cancer treatment

...an be tailored for different applications. "This technique should allow more rapid, accurate, and therefore s... machines accordingly. Andrew Wilson said: "This technique should allow more rapid, accurate, and therefore safer treatment of malignant tumours." A different...

Technique offers new view of dynamic biological landscape

A new technique for analyzing the network of genetic interactions ...istatic genetic interactions at once." The E-MAP technique consists of selectively "dialing down" the activity of a multitude of gene pairs and comparing the e...

Plants, too, have ways to manage freeloaders

... with various pairs of the three strains. Using a technique called the polymerase chain reaction to identify the bacteria in individual nodules, the researchers found that many plants nodulated both strains that were offered. On average, however, within individual plants, the poorly performing bacteria inhabi...

ASU researchers 'wire' DNA to identify mutations

...nd Peiming Zhang has developed a new, breakthrough technique for the detection of DNA mutations. Their results, published in the journal Proceedings of the National Academy of Sciences, demonstrate for the first time, the possibility of directly identifying these mutations, or single nucleotide polymorphisms ...

Researchers develop new method to help find deadly malaria parasite's Achilles heel

...physically interact with one another, modified his technique and added special culture conditions to enable his group to study Plasmodium. Fields's team and collaborators at Prolexys Pharmaceuticals of Salt Lake City, UT, discovered 2,846 interactions involving 1,312 Plasmodium falciparum proteins. The team pr...

New technique puts brain-imaging research on its head

...sity in St. Louis and collaborators have devised a technique on humans that for the first time shows just what ...the skull accelerates. What they've done is use a technique originally developed to measure cardiac deformation to image deformation in human subjects during re...

Carnegie Mellon U. transforms DNA microarrays with standard Internet communications tool

...y as 30,000 different genes on one small chip. The technique has been used to study some of the most important biological systems, including how cells normally divide (the cell cycle) and immune responses to disease and infection. "Ultimately, we think that the addition of this method to standard DNA microarr...

New nanosensor uses quantum dots to detect DNA

...neath a microscope. The researchers, who say the technique will have important uses in medical research, demo...per and supervisor of the research team. "This new technique is ultrasensitive, quick and relatively simple. It can be used to look for a particular part of a DN...

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