Tag: "existence" at biology news

Making embryos male

...l Leydig cells. This key observation points to the existence of other signaling pathways that may act in conjunction with DHH/Patched 1 to fine-tune the specification of fetal Leydig cell fate. Regardless, the work has begun to answer a long-standing question in developmental biology: What signal(s) induce the...

Chimpanzee stone tool site excavated

...nt out to Christophe Boesch and Melissa Panger the existence of flake scars. The scars were produced by the removal of stone pieces detached during the cracking of nuts and are as small as a few centimeters. Using archaeological methods on a non-human species, for the first time the excavations revealed new fa...

Buffalo neuroimaging researchers studying multiple sclerosis from inside human brain

...unding -- more than $1 million in its two years of existence -- and its research agenda, is multidisciplinary. UB provided a grant to purchase computers. The Juvenile Diabetes Foundation, the National Multiple Sclerosis Society and the National Institutes of Health provided research funding. Bakshi has gat...

Physics tip sheet #13 May 15, 2002

...sions that might be curled up to small scales. The existence of oscillating neutrinos (as recently confirmed by... structures and bubbles, termed nuclear pasta. The existence of pasta phases change the dynamics of neutron stars and how they behave astrophysically. New detail...

Parasite or partner? Study suggests new role for junk DNA

... may lead to cell death unless it is repaired, the existence of an alternate repair pathway could be a good thing for the host cell. The question is, whats in it for the L1? This study brings up the question of whether L1s are just taking advantage of DNA breaks to plug themselves into these sites or are they ...

UF expert: ancient fossil suggests flowers may be underwater gift

...and, he said. Further proof of the flowers watery existence comes in the form of fish fossils found together mixed in with the fossil plants, he said. The compressed plants embedded in a sandy-colored slab collected from northeast China and studied at UF are at least 125 million years old and make up an enti...

Disorder forces DNA molecules out of tight spaces

...rnell University researchers have demonstrated the existence of an entropic recoil force that causes the molecules to move from a tight space into a more open one. The findings, published in Physical Review Letters (March 25, 2002), are by Stephen Turner, a postdoctoral research assistant at Cornell; gradua...

Peripheral 'Swatch' watches are a powerful force in bodys circadian rhythms

...sor of Neurobiology at Harvard Medical School. The existence of peripheral timepieces had been suspected but no one knew how much control they actually had or why they were in organs such as the heart, lungs, and liver in the first place. Using newly developed gene chips, Charles Weitz, Kai-Florian Storch, Res...

Widespread amphibian deformities caused by parasite

...ers said in a major study released this week. The existence and number of those parasites is dependent upon the presence of a group of snails that play an essential role in the life cycle of the parasite, the study said. And burgeoning populations of those snails, in turn, may be due to alterations of habitat...

New insect order discovered for first time since 1915

... year old piece of Baltic amber. Subsequently, the existence of a living population of these insects was discovered on theBrandberg Mountain in western Namibia by a team of scientists from the National Museum of Namibia in Windhoek. Living individuals were confirmed on a recently completed rediscovery expediti...

Rare fossilized tube feet suggest functional shift through time

...n interesting reference point when arguing for the existence of soft parts in the Hunsrueck in general. It provides additional evidence that the special chemical conditions necessary for such extraordinary preservation did occur in the muddy Hunsrueck sea. The scientists will discuss the fossil and its implic...

PNNL celebrates arrival of powerful NMR

...900 MHz wide-bore system, the most powerful NMR in existence was 600 MHz. With its larger bore size and power, PNNL's new system will allow scientists to study molecules and cells at greater resolution, thereby facilitating more detailed views of a cell's physical and chemical properties and innerworkings. DOE...

Conservation International and National Geographic Traveler announce World Legacy Awards

...community or privately owned nature reserves whose existence through tourism revenue helps ensure protection for wilderness areas, marine environments, and rare and endangered species. Heritage Tourism This category recognizes a business, organization, or attraction making a positive contribution to cul...

Pinpointing the protein problem in Lou Gehrigs Disease

...an survive for as long as 18 years, says Coln. The existence of SOD1 mutants associated with this milder form of FALS makes it an intriguing biophysical and biochemical marker. Unlocking the mystery of the pathogenic causes for FALS could also play an important role for better understanding other neurogenerati...

Scientist probes fossil oddity: Giant redwoods near North Pole

...m a prehistoric weather pattern unlike anything in existence today. Other challenging mysteries remain, including how a forest could develop given the sunlight it would receive on Axel Heilberg. Because of its closeness to the North Pole both now and in the time of the redwoods, Axel Heilberg spends four month...

Researchers describe overall water balance in subglacial Lake Vostok

...nique habitats and microorganisms. Confirming the existence of life forms and unique biological niches without contaminating the pristine lake waters, however, is a difficult scientific and technical challenge with international ramifications. According to a paper to be published in the March 21 issueof ...

Years of research, thought lead geologist to propose new supercontinent Columbia

...Columbia because some of the best evidence for its existence is in the Columbia River region of western North A...or that reason, the shape of Columbia and even its existence is less certain than that of Rodinia. Originally trained as petrologist and geochemist, the UNC sc...

US scientist testifies for prosecution in Milosevic trial

...ame time, and in distinct surges that suggest "the existence of an external cause." "When the overall estimates are compared at the regional level, a clear relationship remains between the patterns of refugee flow and killings," according to Ball's report to the tribunal. "The structure of the patterns in bo...

Physics tip sheet #4 March 13, 2002

...ergy densities did exist, they would allow for the existence of traversable wormholes, faster-than-light travel, creation of naked singularities and violations of the second law of thermodynamics. This paper examines what constraints exist on possible configurations of spacetime with negative energy densities....

Genetic link to endometriosis unique Icelandic study provides further proof

...nship, we have for the first time demonstrated the existence of a hereditary component to endometriosis that can be traced beyond first-generation relatives," said Dr Kari Stefansson, Chief Executive Officer of deCODE and co-author of the article. "This could not have been achieved anywhere else in the world. ...

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Breaking Medicine News(10 mins):Health News:(Beach) Sands of Time Running out to Enter Horizon Blue Cross Blue Shield of New Jersey’s 2014 “Back to the Boardwalk” Sweepstakes 2Health News:Memantine Discussed in New Comprehensive Patent Search Report by Ark Patent Intelligence Published at MarketPublishers.com 2Health News:Memantine Discussed in New Comprehensive Patent Search Report by Ark Patent Intelligence Published at MarketPublishers.com 3Health News:President Cites Atlanta BeltLine Workforce Partnership in Healthcare as National Model 2Health News:President Cites Atlanta BeltLine Workforce Partnership in Healthcare as National Model 3Health News:President Cites Atlanta BeltLine Workforce Partnership in Healthcare as National Model 4Health News:President Cites Atlanta BeltLine Workforce Partnership in Healthcare as National Model 5Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 2Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 3Health News:Expanded Financial Options for Women Interested in Proactive Egg Freezing at Shady Grove Fertility 4Health News:Wolnerman Re-elected as Chairperson of Iowa State Board of Health 2
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