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Tag: "yellow" at biology news

MIT: Pulsing light silences overactive neurons

... to reversibly silence brain cells using pulses of yellow light, offering the prospect of controlling the ha... researchers can inhibit their activity by shining yellow light on them. Light activates the chloride pumps, which drive chloride ions into the neurons, lower...

Common parasitic infection leads to increased risk for HIV infection

...rge. Some women may have a frothy, strong-smelling yellow green discharge, and may feel discomfort during intercourse and urination, as well as itching of the genital area. Lower abdominal pain occurs in rare cases. The study, conducted by R. Scott McClelland, MD, MPH, and colleagues at the University o...

Making mice with enhanced color vision

...inguished." Normal mice failed to discriminate yellow versus red lights when the light intensities were set to give equal activation of their middle wavelength receptor. However, mice with both the human long wavelength and the mouse middle wavelength receptors learned to tell the difference, although i...

Cancer researchers add spice to research against rare neuromuscular disease

...ies of Asian tradition, where curcumin ?the bright yellow spice found in curry powder ?has been used to treat a variety of ills. In the last decade, Western medicine has been putting curry to the test, finding that the spice offers promise against breast cancer, melanoma, Alzheimer's disease and the blister...

NASA predicts nongreen plants on other planets

...plants on planets in other solar systems. Green, yellow or even red-dominant plants may live on extra-solar planets, according to scientists whose two scientific papers appear in the March issue of the journal, Astrobiology. The scientists studied light absorbed and reflected by organisms on Earth, and de...

Hotspots of mercury contamination identified in eastern North America

...team focused on levels of the potent neurotoxin in yellow perch and common loons, but it also took into account contamination in other fish, birds, and mammals. In addition to these hotspots in New England, New York, and Nova Scotia, the researchers found nine "areas of concern" in these regions and in Queb...

How trees manage water in arid environments

...erience a monsoon every summer. Certain roads have yellow warning signs posted -- "Do Not Cross When Flooded." Though these signs may seem out of place in the middle of a desert, they have a serious purpose. In Arizona, as in other regions of the world such as India, residents must cope with a season of hig...

A 'traffic light' for neurons means 'go' for improving brain research

...m, can make neurons less active in the presence of yellow light. Combined, the two genes can now make neuron...affic signal: Blue means "go" (emit a signal), and yellow means "stop" (don't emit). In the new paper, the group shows this technique can have immediately ...

Studies force new view on biology of flavonoids

... and often give them their color ?they make lemons yellow and certain apples red. They are also found in some other foods, such as coffee, tea, wine, beer and chocolate, and studies in recent years had indicated that they had strong antioxidant activity ?and because of that, they might be important to biolo...

Cornell lab confirms deadly fish virus spreading to new species

... York’s No. 2 sport fish), northern pike, walleye, yellow perch, channel catfish, brown bullhead, white perch, white bass, emerald shiner, bluntnose minnow, freshwater drum, round goby, gizzard shad and burbot. Roughly 1,600 fish have been tested at Cornell since May 2006. Bowser suspects the virus may have...

Genome of yellow fever/dengue fever mosquito sequenced

Developing new strategies to prevent and control yellow fever and dengue fever has become more possible with the completion of the first draft of the genome sequence of Aedes aegypti mosquito by scientists led by Vishvanath Nene at The Institute for Genomic Research (TIGR) and David Severson at the Univer...

Herpes infection may be symbiotic, help beat back some bacteria

...that in effect puts some immune system soldiers on yellow alert, causing them to patrol for invaders with their eyes wide open and defense weapons ready." Other scientists previously had shown that interferon gamma helps the immune system fight off some strains of bacteria. This led Virgin and his collea...

8 plants from South Africa may hold potential for treating high blood pressure

...gallant soldier Justicia flava, also known as yellow justicia and taken for coughs and treatment of fevers Momordica balsamina, an African herbal traditional medicine also known as the balsam apple Oxygonum sinuatum, an invasive weed with no common name Physalis viscosa, known as starhai...

Detecting cold, feeling pain: Study reveals why menthol feels fresh

...e pungent ingredients in such plants as wasabi and yellow mustard. In response to high temperatures, the receptor produces pain and irritation. "All of these studies use natural products to understand pain mechanisms in the periphery of the body, where they are first sensed," says Julius. Ultimately, ...

Putting feelings into words produces therapeutic effects in the brain

...u hit the brake when you’re driving when you see a yellow light, when you put feelings into words, you seem to be hitting the brakes on your emotional responses.” As a result, an individual may feel less angry or less sad. This is ancient wisdom,” Lieberman said. “Putting our feelings into words helps...

Revealed -- Mosquito genes that could be controlling the spread of killer viruses

...controlling the transmission of viruses that cause yellow and dengue fevers – diseases that infect over 50 m...lain why one type of mosquito transmits dengue and yellow fevers, while the other transmits malaria. Beyond the present descriptive work, functional studies w...

Study shows lizard moms dress their children for success

...t of estradiol to their eggs when their mate had a yellow throat. The hormone induced a barred back pattern ...daughters. Both of these effects were inhibited by yellow genes. "This is a classic example of an interaction between genes and environmental influences on...

Simulations unravel outer membrane transport mechanism

... dark blue) of the outer membrane transporter. The yellow sphere represents the point on the TonB protein at which the force was applied. To view the results of the simulation, please go to: http://www.life.uiuc.edu/emad/TonB-BtuB/btub-2.5Ans.mpg Credit: Image courtesy of Emad Tajkhorshid To address ...

Research identifies protein that signals flowering in squash plants

...s. The authors then used the potyvirus Zucchini yellow mosaic virus (ZYMV) as a delivery vector to test whether long-distance movement of FT mRNA and/or FT protein was required for floral induction. The choice of a potyvirus vector was important as these plant viruses do not produce sub-genomic RNA speci...

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