Tag: "five" at biology news
Salamanders May Reveal Best Way To Manage Forests
...st, salamander abundance declined significantly on five
ofthe seven treatments. "This tells us that in these habitats salamanders areextremely sensitive to any form of canopy disturbance," Harpole said. "Managingcertain areas of forest intensively and then allowing longer periods of timebetween disturbanc...
Subtle Changes In Brain Receptor Gene May Have Significant Consequences For Addiction
Scientists have identified five
slightly different versions of the mu opioidrecept...olymerase chain reaction, the scientistsidentified five
SNPs of the mu opioid receptor gene in the coding region. Two ofthe SNPs were identified previously ...
Transplanted Skeletal Muscle Mimics Heart Muscle; Helps Failing Heart Pump, Duke
...t appear to behappening." In the remaining five
rabbits, immune system inflammatory cells appearto have destroyed the injected muscle cells. Taylor said this is a naturalresponse. The body sends immune system cells to the heart to clear out deadheart cells, and in this case they also cleared out t...
Genetically-Altered Crops Can Produce Tough, Hard-To-Kill Weeds
...oduced six timesmore canola oil than they did just five
years before, according to the UnitedStates Department of Agriculture. That year, the U.S. produced over $100million worth of canola -- a popular cooking oil these days because it containsthe lowest amount of saturated fat of any food oil. M...
Alaska Scientists Say Salmon Declines Inevitable
...wing that you're in a new regime until you've seen five
years of bad returns in a row or five
years of good returns in a row," says Adkison. UAF assistant professor of oceanography Tom Weingartn...
Alaska Natives Provide New Evidence Linking Common Infection To Heart Disease
...lation. Individuals studied included 47 Eskimos, five
Aleuts andeight Indians. All individuals (45 males and 15 females) died between February 1989 andDecember 1992. Their ages at death ranged from 15 to 57 years. Davidson and his colleagues also found the bacteria associated withmacrop...
Gritty Research Leads Scientists To Metal-Loving Discovery
...material, (in this case a typeof silicate) is only five
to 15 micrometers in diameter and contains a densely ordered array ofcylindrical caverns or pores, giving the material a honeycomb appearance. The chemically tailoredmonolayers reside within the pores, with the molecules strongly binding at one end ...
Penn Researchers Prove "Short-Cut" Function Of Myelin Sheath Channel: BetterUnderstanding Of Myelin Should Lead To Therapies For Neuropathies
...ith inherited forms of neuropathies. Specifically, five
years ago, former Pennneurologist Kenneth H. Fischbeck, MD, and Scherer reported that mutations inconnexin32 -- a protein found in myelin-producing as well as other cells --cause X-linked Charcot-Marie-Tooth disease (CMTX), a genetic disorder thatpro...
First-Ever Scientific Estimate Of Total Bacteria On Earth Shows Far Greater
Numbers Than Ever Known Before
...ist William. B. Whitman, estimates thenumber to be five
million trillion trillion -- that's a five
with 30 zeroes afterit. Look at it this way. If each bacterium were a penny, the stack would reach a...
Virus Linked To Causing Enlarged Hearts In Children With Certain Genetic Makeup
...ent of children who develop thisdisease die within five
years. Viruses such as CVB are thought to beresponsible for causing about half of the cases of myocarditis in North America,according to Trucco. "It's important to remember that this is still a rare disease and that it isrelatively easy to screen ...
In New Alzheimer's Studies, Lab Tests Show Vitamin E And Other Antioxidants
Preventing Brain Cell Death
...nnually. By the turn of the century, an estimated five
million Americans willbe diagnosed with the disease and that, by the year 2050, the number could reachas high as 14 million. Dr. Butterfield will present his paper, TOXI 109, on Thurs., Aug 27, at 10:45a.m...
Artificial Heart Chamber And Artificial Blood Vessels Aid Cardiovascular
...p human or artificial hearts to circulateblood for five
years or more, Dr. Runt said. His work is conducted inconjunction with Penn State's Hershey Medical Center Section on ArtificialOrgans. In another related paper at the American Chemical Society meeting, Dr. MichaelSzycher, Ph.D., of CardioTech Inter...
UNC Scientists Succeed In Inserting Gene In Human Cells Via Artificial
... "We have been able to do this with a piece of DNA five
to 20 times theusual size scientists work with," said Dr. Jean Michel Vos, associate professorof biochemistry at the UNC-CH School of Medicine. "Although so far we haveworked only in cultured human cells in the laboratory, we believe it couldeventual...
For Fruit Flies, Finding The Right Mate May Mean Offspring With A Longer Life
Span, According To New Study
...he second or "M" line, theyplaced one female with five
males so that female choice and male competitionwould come into play. Not every vial was the site of a hot romance. Even in some of the "S"vials, females chose not to mate rather than consort with the big lug chosen forthem. To adjust for suc...
Research Team Finds Gene Causing Two Types Of Muscular Dystrophy
...hromosome 2 where the gene might lie andidentified five
candidate genes in that area that were expressed in skeletalmuscle tissue. Using information from several families with Miyoshi myopathy,they identified nine mutations in the gene later named dysferlin that were foundin people with either Miyoshi my...
Simple Chemical Switch Steers Migrating Neurons
...the cyclic AMPcircuit. "It's remarkable that all five
cues we've looked at so far fit thissimple picture," said Tessier-Lavigne. "We seem to be tapping into someprimordial guidance mechanisms. The growth cone is a machine designed torespond to the environment by turning one way or the other, so maybeit'...
Radio Controlled Aircraft To Sniff Out Biowar Bacteria
...kes no power to run it," Liglersays. Every five
minutes, water from the chamber is pumped over the...gcycle. "We just continually run the [tests] every five
minutes until we generatea signal," Ligler says. Author: Lila Guterman New Scientist Magazi...
Cattle Diets Could Control E. Coli Danger
...cientists say. By feeding hay to cattle for about five
days before slaughter,the number of acid-resistant "E. coli" can be dramatically reduced. "Most bacteria are killed by the acid of stomach juice, but "E. coli "fromgrain-fed cattle are resistant to strong acids," explains James B. Russell, aUSDA mic...
New Evidence From Dinosaur Footsteps Show Massive Herds Once Roamed Northern Alaska
...logy departments collected casts andimpressions of five
different types of dinosaurs in the foothills of Alaska's Brooks Range during thesummer 1998 field season. A total of 13 new track sites were located along a 75-mile stretch of theColville River in National Petroleum Reserve-Alaska. The presence o...
Whitehead Study Supports Existence Of Ancient RNA World, Helps Provide Insight Into Early Evolution Of Life
...t have become extinct since. In the past five
years, Dr. Bartel and his colleagues have used themethod of making trillions of RNA go through test-tube evolution (a technologythat selects for the fittest molecules and introduces errors in successivegenerations of copies much like in real evolutio...
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