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Tag: "spot" at biology news

Math that powers spam filters used to understand how brain learns to move our muscles

...he computer learner was tasked with “looking” at a spot of light. Then all the lights were turned off. The spot of light was turned on again and the computer learner was again asked to look at that same spot. The...

Snoring in children might be an allergic type disease

...contribute to a clinician’s ability to effectively spot snoring in pre-school children in order to identify potentially more serious obstructive sleep apnoea.” ...

Stroke study sheds light on left-right brain divide

...h right-brain damage who most frequently failed to spot their errors and had difficulty keep track of the changing task rules. The group with damage to the left frontal lobes corrected 68% of mistakes in the test, whereas people with right-brain damage only made corrections to 30% of their errors. This su...

'Virtual Patient' to simulate real-time organ motions for radiation therapy

...." Real-time simulations could allow doctors to spot the small fractions of time when the lungs, liver, kidneys, and eventually the heart, are stationary relative to the external radiation beams. These opportune moments during the actual therapy mean that doctors will have more confidence delivering th...

Dinosaur hearing, listening to muscle noise, quieter cubicles

... seen in young women. Conventional ultrasound can spot lesions but cannot measure tissue stiffness, a leading indicator of malignancy. By contrast, VA induces a small-scale vibration in the tissue, and it is this low-frequency signal that provides the crucial information about tissue stiffness. Azra Al...

New study may show how to forestall a fatal, virus-caused immune-system meltdown

...at Galveston (UTMB) believe they’ve found a way to spot the biochemical profile of an inappropriate immune response to viral infection ?an important step toward developing new therapies that may head off or stop an otherwise fatal immune system meltdown. In a paper published in the February 14 issue o...

Common blood test can help distinguish between mononucleosis and tonsillitis

...g between them requires an expensive mononucleosis spot test. Dennis M. Wolf, B.Sc., D.O.-H.N.S., M.R....ed at their facility. All patients were given the spot test for mononucleosis and additional blood tests were performed to determine the number of lymphocy...

Tiny clue reveals new path toward heart disease

...hat is involved in the migration of cells from one spot to another within smooth muscle. According to the ... blood vessels, causing cells to congregate in one spot and form a plaque in the vessels to the heart. In addition to identifying the genetic variations ...

Lizards 'shout' against a noisy background

...wn and extending a colorful throat pouch. They can spot a rival lizard up to 25 meters away, said Terry Ord, a postdoctoral researcher at UC Davis who is working with Judy Stamps, professor of evolution and ecology. The lizards' signals need to be strong enough for a rival to see, but not vivid enough ...

Magnetic system could be key to surgery without scars

...magnets to position an internal camera at the best spot for seeing or to move a retractor or other surgical instrument. Once optimally positioned, the instruments can be locked in place. That allows a much greater range of maneuverability and the surgical team can more easily reposition the camera or inst...

Fish can determine their social rank by observation alone, study finds

...ive." When A. burtoni males fight, it's easy to spot the winner. Mature males have a menacing black stripe, or eyebar, on their face. After a fight, the winner retains his showy appearance, but the loser's eyebar temporarily disappears as he tries to flee his more aggressive opponent. To test for t...

UCLA: How does your brain respond when you think about gambling or taking risks?

...in activity; the technique uses magnetic fields to spot active brain areas by telltale increases in blood oxygen. For each question, the participants answered whether they would strongly agree to the gamble, weakly accept it, weakly refuse it or strongly reject it. Participants were not told whether th...

Cancer cells forming blood vessels send their copper to the edge

... optics to focus coherent X-rays to sub-micrometer spot sizes, through which the sample is raster scanned (scanning from side to side, top to bottom). By collecting emitted fluorescence spectra at each point using an energy-dispersive detector, the researchers obtained images displaying the concentration ...

Global map shows new patterns of extinction risk

...es is different include: New Zealand is a hot spot for threatened birds because of the danger posed by introduced rats and cats. Mammals are highly threatened across eastern Africa due to hunting and the bush meat trade The tropical, rainforest-clad mountains of northern Australia are home to man...

T-ray breakthrough could make detecting disease far easier

...nd mirrors to focus the radiation. This limits the spot size of focused T-rays to a substantial fraction of a millimetre and this has made studies of small objects such as biological cells with high resolution are virtually impossible. But in their work the researchers found that although ordinary met...

German researchers develop first non-invasive test to measure skin aging

... impossible to monitor variations in the very same spot as aging progresses. "You would like to measure changes in collagen content over time," Dr. Koehler said. "Moreover, current techniques provide a qualitative assessment of the state of the matrix, but no precise measure of the collagen or of the elas...

New way of tracking muscle damage from radiation

...h Hospital. The researchers report that MRI can spot the immediate injury done by radiation therapy to the muscles of children undergoing radiation treatment for certain types of soft-tissue cancer. This also indicates that MRI might one day be able to help doctors predict the amount of long-term damag...

Tearing down the fungal cell wall

...a, a destructive fungal pathogen that causes black spot disease on most cultivated Brassica crops worldwide, results in considerable leaf loss in many economically important crops including canola, cabbage and broccoli. Sensitivity to spores of Alternaria species is also clinically associated with human ...

Peering into the shadow world of RNA

...to the DNA at the new location. If their insertion spot happens to be within the coding region for a vital gene, the result can be destruction of the gene, leading to birth defects and genetic disease. Over evolutionary history, this ability of transposons to copy themselves to new locations has helpe...

Selecting life: Scientists find new way to search for origin of life

...s problem. Microarrays are produced robotically to spot tens of thousands of microscopic droplets of DNA from as many genes onto a slide, enabling scientists to measure which genes are turned on. This rapidly developing technology can be used to identify, for example, the genes involved in disease. The hi...

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