Tag: "link" at biology news

Researchers Find Unexpected Feature In Plankton Nervous System

... source of protein in the ocean and forma critical link in the marine food chain between the phytoplankton on which theyfeed and the krill, fish and whales that feed on them. In essence, they are theinsects of the sea -- more prevalent but harder to study than their land-basedcounterparts. The Pacific Bio...

Melatonin Shapes Brain Structure In Songbirds

...s shrink again every fall. Scientists were able to link the risein testosterone to actual physical changes...mones, and scientists often are able tosee a clear link between brain areas and behavior. In particular, general issuesof brain plasticity, which are more d...

UCSF Lab Makes Observation That Could Explain Ability Of Modified Cold Virus To Kill Cancer Cells

...genes." "We're trying to prove this is the missing link in the lab, by putting p14ARFback into these tumor cells and seeing if it really does stop the virus fromgrowing." If the gene's function is proven, it could also serve as a new target for cancertherapies in some tumors lacking functional p53 genes.T...

Scientists Discover Important Molecular Link That Allows Cells To Form Blood Vessels

...en Huynh-Do and theircolleagues report a molecular link between an endothelial receptor called EphB1and the machinery that mediates cell attachment, integrin alpha 5 beta 3, whichhad earlier been implicated in angiogenesis. These Vanderbilt researchers proposed in an earlier report in the journal Genesand...

Biggest Bacteria Ever Found

...hioploca ina small class of microbes now known to link the sulfur and nitrogen cycles.Given that sulfide is abundant in the plankton-rich upwelling regions where themicrobes have been found, Schulz wonders whether "this way of oxidizing sulfidemight be more important to the environment than we've thought...

A 'Missing Link' Fossil Adds 'Foliage' To The Early Human Ancestor Family Tree

.... White cautioned that "we cannot yet conclusively link the new species with thebutchery or the more modern limb proportions." Both sets of fossils were dated using the argon-argon radioisotopemethod as well as biochronology and paleomagnetism. The same research team haddiscovered the earliest-kn...

Suppression Of Natural Fires Harms Squirrels

...tation and starvation. Unless these squirrels can link upwith neighboring populations and obtain sufficient fatty seeds to carry themthrough hibernation, I'm afraid they will die off altogether in our lifetime,"says Paul Sherman, one of four biologists authoring a genetic study of theNorthern Idaho groun...

Cedars-Sinai Medical Center Physicians And Scientists Present Findings At Annual Meeting Of The Pediatric Academic Societies

...ly. In 1997, another group of researchers noted a link between autism andmacrocephaly, suggesting that macrocephaly may be a recognizable feature of asyndrome associated with autism. Dr. Graham and his colleagues are studyingseveral other Cole-Hughes syndrome cases to determine if autistic features are a...

Enzyme Presence Could Be Key Factor In Wolf Health, Study Suggests

...rengthens the domestic dog's theorizedevolutionary link to gray wolves(Canis lupus), he said. The enzyme discovery was published in the Journal of Zoo and Wildlife Medicine.The heart comparison wasreported in Comparative Biochemistry and Physiology. The companion studieslooked at wolves that have livedsed...

Study Reveals Cancer Role Of Mutated Gene

...irectly to thenucleolis. This finding led them to link ARF's Exon 2 with cancer, "because many ARFmutations associated with human cancer are clustered in this area and arepredicted to disrupt ARF's normal localization," Xiong explains. "So we tested whether mutations derived from cancer patients would mi...

Women With Low Cholesterol May Be At Risk For Depression And Anxiety

... the body is gaining moreprominence as researchers link it to a variety of critical functions, such ashow immune cells work, said Suarez. Long involved in studying the effects of stress and depression in women,Suarez' interest in cholesterol and mood grew out of a series of large studiesconducte...

First direct link found between bacteria in drinking water and stomach ulcers

...researchers report they have found thefirst direct link between the presence of a bacterium in Pennsylvani...d by the team as the first to "demonstratea direct link between contaminated drinking water and stomach ulcers." Bakersaid the study involved private, untre...

Massive pollution documented over Indian Ocean

...synthesis,including plankton, which provides a key link in the marine food chain. One of the primary goals of INDOEX is to determine the role thataerosols play in global climate change. Early results indicate that thepollutants play a dual role in that they have both warming and cooling effects. ...

Drug stops blinding blood vessel growth in mice

...ctivated by VEGF after which it activates the next link in the chain. A fewlinks downstream is protein kinase C, an enzyme that appears to be important inkeeping the chain reaction going. Platelet-derived growth factor (PDGF) isstructurally similar to VEGF and may stoke the fires of the chain reaction f...

USGS study casts doubt on role of fire suppression in causing catastrophic shrubland wildfires

...e of reasoning, many scientists have argued that a link existsbetween fire size and fire suppression. They blamed large wildfires on firesuppression and hypothesized that wildfires could be prevented by creating alandscape patchwork of different-aged vegetation. They asserted that firesuppression has resu...

UCSF team identifies gene crucial to blood pressure regulation

...intainingnormal blood pressure, but its definitive link with the sgk gene had not beenmade. "Now that we know that sgk mediates aldosterone's effects, we can begin todevise ways of blocking its action. This holds the promise of providing bettertreatments for the millions of people with salt-sensitive h...

Environmental Health Institute report concludes evidence is 'weak' that electric and magnetic fields cause cancer

...HS and its grantees focused onthe possibility of a link to cancer ? a reaction to a leukemia study in Denver,Colo., in 1979, and to subsequent attempts to duplicate or refute it in Denverand elsewhere. But the report said NIEHS also found inadequate evidence of anylink to such non-cancer diseases as Al...

Stimulation technique holds new promise for spinal cord injuries

...ry to artificially re-establish the communications link from the brain,"Grill said. Injuries that are fart...anted and powered most likely by a radio frequency link with a small boxworn outside the body. The electrodes, which are half as thick as a human hair, are ...

Agriculture linked to red-legged frog decline in California

...on and agriculture. Agriculture had the strongest link to the red-legged frog decline: frogs weremore likely to have died out at sites that were upwind of greater amounts ofagriculture. This suggests that wind-borne agrochemicals may have caused the frogs' decline. Davidson and Shaffer determined the pre...

Hopkins study shows new target for boosting the immune system to improve cancer vaccines

...Activation of the APC has been thecritical missing link in this cascade," says lead author, Eduardo Sotomayor,M.D., a fellow of the Lymphoma Research Foundation of America. "Our method of activation, which targets CD-40 proteins on the APC, maynow be used to provide a stimulant that enhances ca...

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