Tag: "years" at biology news

Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action

...he atmosphere, has been foundover the past several years to play a major role in numerous biologicalsystems. For example, scientists discovered that NO worked in the circulatorysystem to dilate blood vessels. "Free" NO is released by endothelialcells on the inside of vessel walls where it migrates to nearb...

Gene-Altered Mouse May Provide New Insights To Parkinson's Disease, Substance Abuse And Schizophrenia

...st newtreatments. Researchers have known for many years that schizophrenics behave as if theyhave too much dopamine in the brain's limbic system, which controls emotionand behavior. Conversely, not enough dopamine contributes to clinical depression.Although therapeutic drugs for schizophrenia block dopami...

Key to Triplet Repeat Brain Diseases Open Door For New Way To Understand, Treat Genetic Diseases"

...tion of repeated gene sequencesin brain tissue two years ago, when they discovered Haw River Syndrome (alsoknown as DRPLA), an inherited neurological disorder that affects residentsof a rural North Carolina community. The scientists found that the syndrome was like Huntington's disease inthat it was attri...

Tumor Suppressor Gene Located In Liver Cancer Cells

...ccording to Zeneca's De Souza, who has spent three years at Duke University investigating this gene. "Inst...he formation of other types of tumors. After four years of study, Jirtle said, "We are at the end of the beginning."...

Second Breast Cancer Gene Located

...molecularcarcinogenesis. "BRCA1 took four years to go from the initial mapping stage to isolationand characterization of the specific gene involved," Stratton said."Due to many recent advances in molecular biology, we have managedto shorten the process for BRCA2 to half that time." The re...

Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures

...d unaltered over at least the past several million years under any climatic conditions. But the relative am...les were alive between 3.2 million and 2.5 million years ago, an interval that featured both glacial and interglacial intervals. "We wanted to take this new ...

Dating A Caveman

...icates that the fossils date from at least 100,000 years earlier than scientists previously believed. Ku da...ng Peking Man fossilized bones is close to 400,000 years old. Previous studies, using less advanced methods, dated the remains in the 200,000- to 300,000-yea...

Heat-loving Microbe Repairs Its DNA With Light

... been recovered by microbiologists overthe past 25 years from various hot springs, undersea vents, andother geothermal environments. When its genetic material (DNA) is artificially damaged byultraviolet (UV) light, S. acidocaldarius has been found to repair the damage. However, Dennis Grogan, assistant ...

Children Become Gorillas In VR Zoo

...educators first began toplan a 'virtual zoo' three years ago," said Dr. Terry L. Maple, directorof the zoo and one of the world's foremost authorities on gorillabehavior. "We instantly thought of Georgia Tech as our design partner,and we are extremely impressed with the scholarly approach taken by <AHR...

Freshwater Sponges May Pose Threat To Zebra Mussels

...93 while studying an artificial reef built about 7 years ago near Lorain, Ohio by researchers from Ohio> Sea Grant. It's possible the increase is related to the zebra mussel invasion, which began in the late 1980s, said David Kelch, an associate professor with OhioState's Extension Sea Grant program. ...

Duke Researchers Find Second Gene Linked To Blood Vessel Disorder

...le a treatment based on Marchuk's work may be some years down the road,he emphasizes that for the first 98 years since the disease was describedin the medical literature, virtually nothing was known of its underly...

New Discovery About Genes Has Implications For Genetic Therapy

...the earliest organisms evolved several billions of years ago since the introns function as very primitive g... primitive one-celled animals-- at least a billion years ago. "We were interested in the basic question of how these introns insert themselves into differ...

Transgenic Rice Plants Resist Insects, Drought And Salt Damage

...pabilities that wild plants develop naturally over years of evolution, but we can't afford to wait for dome...China. Commercial production of seed is about two years away, Wu estimated, but several companies have already signed licensing agreements to use the insect...

International Research Team Clones New Skin Cancer Gene

...co-author of the report. 3Although still several years away, it1s not unreasonable to imagine an ointment...CS gene to human chromosome 9, and over the past 4 years he and his collaborators sorted through 40 genes from this region. In May, Bale's group reported is...

Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey

...ve constructed a tree-ring sequence spanning 1,503 years from the ring growth patterns preserved in wood an... counting 200 rings, you know that the tree is 200 years old and started growing in 1776. Then, you compare the pattern of its rings with those from a piece...

Southern Pine Beetle Reaching Outbreak Levels In North Florida

...anted acreage of loblolly pine twice what it was30 years ago and at a higher level than in 1949, when Flori...e will probably see more and more outbreaks in the years ahead," Foltzsaid. "But this is a manageable pest, if everybody works on it together.Across Florida,...

Nutrition Study Reshapes Strategies For Athletes

...s developed this new training program over several years withmany of the women heptathletes. The most important key to an athlete'ssuccess, said Houtkooper, is replacing fluids lost during practice andcompetition. She adds that this is especially critical in the hot and sultryenvirons of Atlanta during Jul...

New Grapes From Cornell Debut

...ons of bottom-line survival. It can take 20 to 30 years of careful breeding, testing, and evaluation before a variety is ready for release. New grapes that have been bred for the climate are eagerly anticipated. Under the leadership of Bruce Reisch, Professor of Grape Genetics in Cornell University's Dep...

Researchers Use Hydrated Lime To Reduce Toxic Selenium Emissions

...dry sorbent injection, has been studied forseveral years as a way to remove sulfur dioxide from flue gas.But this is the first time studies have shown that hydrated limechemically removes selenium by means of an irreversible chemicalreaction. "The hydrated lime -- which is calcium-based -- forms withthe se...

Humble Pocket Gophers Shed Light On The Genetic Fortitude Of Cheetahs

...e genetically almost identical. However, in recent years some ecologists have questioned the validity of that work. The UCSC study provides an independent check. ResearchersM. A. Sanjayan and Kevin Crooks used pocket gophers in the first attempt to repeat the 1985 experiment on wild animals. Just as with t...

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Breaking Medicine News(10 mins):Health News:New Jersey Court Overseeing DePuy Pinnacle Hip Lawsuits Issues New Order, Bernstein Liebhard LLP Reports 2Health News:New Jersey Court Overseeing DePuy Pinnacle Hip Lawsuits Issues New Order, Bernstein Liebhard LLP Reports 3Health News:New Jersey Court Overseeing DePuy Pinnacle Hip Lawsuits Issues New Order, Bernstein Liebhard LLP Reports 4Health News:The Doctor's Office Urgent Care Adds 3 New Physicians to Their Growing Medical Team 2Health News:Sony Pictures Hack Perfect Example of the Reach a Single Cyber Attack Can Have 2Health News:Sony Pictures Hack Perfect Example of the Reach a Single Cyber Attack Can Have 3Health News:Sony Pictures Hack Perfect Example of the Reach a Single Cyber Attack Can Have 4Health News:Sony Pictures Hack Perfect Example of the Reach a Single Cyber Attack Can Have 5Health News:The 13th Annual Twin Cities DI Day Now On Video 2Health News:The 13th Annual Twin Cities DI Day Now On Video 3Health News:Days Inn Montrose Colorado Delivers Last Minute Holiday Season Ski Getaway Accommodations 2
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