Tag: "reveal" at biology news

Enzyme's "Magic" May Hold Key to Anticancer and Antimicrobial Drugs

...f anticancer drugs." The studies reveal that yeast topoisomerase II is heart-shaped, with a gaping hole in its center. Although it is unusual for a protein to have a hollow middle, even more surprising is the elaborate system of "hinges" and dramatic conform...

From Corn Rootworms To Art, Cornell's Reactor Is At The Core

...n film. The result looks like an X-ray, but it can reveal things X-rays cannot. An example: a toy plastic gun sealed in a 1-inch-thick lead box. The neutron radiograph shows details inside the gun, even its spring mechanism, but X-rays could not even penetrate the lead box. "Neutron radiography is a new ...

Bark Beetle Infestation Spurs Multifaceted Study

...d. A compilationof burning dates and locations can reveal the fire pattern in the area,including both frequency and extent. The severity of the fires can be estimatedfrom the burn scars. A survey of the ages of trees at specific fires can give a cross sectionalview of the age composition of the forest. ...

Duke Ecologist Says Logging Is Creating 'Mahogany Deserts'

..., the pods' outer shells crack openand fall off to reveal seed clusters that look like parasols. As treetop winds blow, individual wing-shaped seeds can then detach andflutter to the ground "like little helicopters," Snook said. Sheestimated that airborne dispersal can sow mahogany seeds at least 180 feeta...

Antarctic Science Season Gears Up With Searches for Meteorites, Neutrinos, and New Life Forms

...ife can endure. Recent studies, however, reveal a surprise: archea comprise more than 30 percent of biomass in waters off Palmer Station, Antarctica -- the highest rates measured in the ocean. A team led by Edward DeLong of the University of California-Santa Barbara will sample archea in the regi...

Genetic Makeup May Explain Why Some Women Smokers Develop Breast Cancer While Others Don't, UB Study in JAMA Reports

... further investigations in other study populations reveal similar associations between NAT2 genotype, cigarette smoking and breast-cancer risk, it would be an important insight into the etiology of this disease," she added. "It is one more cancer site in which cigarette smoking has been implicated." Earli...

The CIA Would Like To Know What Scientists Are Seeing Over The Rainbow

...s because the methods rely on chemical stains that reveal only shades of gray. Pieces exchanged from one chromosome to another--a process called "translocation" that is often associated with disease--cannot easily be detected. And in diseased cells containing several badly distorted chromosomes, tracking ...

How Dry Is The Tropical Free Troposphere? Implications For Global Warming Theory

...ned fromsatellites of the Earth's lower atmosphere reveal no definitive warmingtrend over the past two decades. The slight trend that is in thedata actually appears to be downward . These satellite data are verifiedby in-situ measurements of the lower atmosphere made by balloon-borneobservations arou...

Second Gene Responsible For Tuberous Sclerosis Complex Identified

...ism, or tumors inmultiple organs." Brain scans may reveal an array of abnormalities, especially cortical tubers,which are firm, potato-like nodules that give the disorder its name and are madeup partly of abnormal neuronal cells and glial cells, the brain's connectivetissue. Other brain abnormalities inclu...

UC Geologist "Flip-Flops" On Understanding Of Crinoid Life Style

...cetension." Viewed from above, Meyer's model would reveal a huge spiderweb type complex floating on the top of the sea. That's muchdifferent than the old textbook model which shows Uintacrinusbobbing with its arms hanging down into the sea. Meyer rejectedthat idea two years ago, noting there were not specia...

Growth Factor Stimulation Leads To Increase In New Neurons In The Striatum And Cortex Of The Brain

...e. The researchers hope their findings may reveal new ways of producinglarge numbers of new neurons to replace diseased or damaged cells. Futurestudies willaddress the mode of action of BDNF - whether it directs cells to become neuronsor whether it prevents the death of neurons, as well as whether t...

Eating Lake Ontario Fish Linked To Shorter Menstrual Cycles; Consumption May Delay Pregnancy

...ssessed both time-to-pregnancy, a measure that can reveal conception delays, and length and regularity of menstrual cycle, aspects that affect a woman's fecundity. The time-to-pregnancy study, headed by Germaine Buck, Ph.D., UB associate professor of social and preventive medicine, involved 874 women...

Mysterious Wildlife Disease

...ing that clues from the new locations will help to reveal the cause of the disease. Wildlife managers throughout the United States are being asked to observe coot populations for disoriented or uncoordinated behavior such as erratic flying or impaired ability to swim or dive. The public is urged t...

DNA Enzyme Works In Crystal Form; Yields New Insights Into Gene Copying

...ide is bound, nobody has evertracked." To reveal the detailed process, the scientists plan to produce movies bytaking series of high-speed X-ray snapshots of the enzyme in action. To triggerall the polymerase molecules to act at once, they plan to infuse into thecrystals light-activatable nucleosid...

Gene For Inherited Syndrome Is Possible New Tumor Suppressor

...la Chapelle's laboratory with studies he hopeswill reveal how mutations in the PJS gene predispose an individual to cancer....

High Testosterone Level May Lead Male Junco To Stray From Mate

...48; Parker said. “In many cases, the results reveal that clandestine matings aretaking place, but we often know little about the conditions under whichthey take place, or the costs and benefits of different mating tactics,”Parker explained. “This study suggests testosterone plays an importa...

Hormones Found In The Brain May Determine How Much You Eat And Affect Obesity And Diabetes

...proteins found in nerve cells -- and receptors may reveal ways toinhibit eating. The hormones were found to stimulate the appetite oflaboratory rats. The neuropeptides, or ligands, which are calledorexin-A and orexin-B, and the receptors, OX1R and OX2R, allude to theGreek word orexis, for appetite. ...

National Studies Reveal Why Pet Owners Take Animals To Shelters And How Many Find New Homes; Statistics Point to Epidemic

...ational Council on Pet Population Studyand Policy, reveal that moving and other lifestyle issues were the main reasonsgiven by pet owners when surrendering their animals to shelters. But themajority of those pets--64 percent--are euthanized instead of adopted into newhomes. The studies also ...

Lights, Camera ... Reaction: Charting The Biological Effects Of Light InBillionths Of A Second

...drug developers, explained Moffat, since "it would reveal more directly how thedrugs look as they interact with the biomolecules." Other authors are Benjamin Perman, Vukica Srajer, Zhong Ren, Tsu-yi Teng, andClaude Pradervand from the University of Chicago; Dominique Bourgeois,Friederich Shotte and Michael ...

Researchers Announce Discovery Of Skulls Of Bizarre Animals Showing Advanced Stage In Transition Between Dinosaurs And Birds

...nt lifeforms. The Shuvuuia deserti skulls reveal an important physical characteristicthat is found only in birds: the animal was capable of "prokinesis," themovement of the snout up and down independently of the rest of the skull. Thisallowed the animal to open its mouth quite wide in order to ea...

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