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Tag: "believed" at biology news

Threats to wild tigers growing

...ins, along with habitat loss and fragmentation, is believed to be the chief reason for the losses. The assessm...wild. Despite the discouraging numbers--there are believed to be only about 5,000 wild tigers left--some conservation programs have been successful. Dinerstein...

Researchers find 24 species believed new to science in Suriname rainforest

...ighlands of eastern Suriname discovered 24 species believed to be new to science, including a frog with flores...t fish and amphibian life. Among the 24 species believed new to science are an Atelopus frog with brilliant purple markings, four Eleutherodactylus frog spec...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

... laboriously constructed over a two-year period is believed to be the largest synthetic one ever built, and it successfully produces large quantities of the encoded protein, whose function can now be easily studied. In research published in the May 22 issue of the journal Biochemistry, the researchers say th...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...areas. Some species included in the study now are believed to be extinct because of habitat degradation and p...ct near Cuba 65-million years ago, which is widely believed to have exterminated the dinosaurs. "Both theories acknowledged that the frog faunas must have arri...

In mice, drug protects against diabetes and atherosclerosis

...ng the risk of diabetes. For many decades, aP2 was believed to act only in fat cells. In 2001, Hotamisligil and a collaborator discovered that aP2 is also expressed in macrophages, which scavenge and digest cellular debris and microbes in the blood stream. The aP2 signals encourage macrophages to load up on c...

Longer treatment benefits sleep apnea patients

...LEEP. More than 12 million adult Americans are believed to have sleep apnea, a common disorder in which the upper airway is intermittently narrowed during sleep, causing breathing to be difficult or even completely blocked. The CPAP device is worn while the patient sleeps and works by blowing just enough ...

Massive herds of animals found to still exist in Southern Sudan

...ldlife was still present in Southern Sudan, nobody believed us,” said Maj. Gen. Alfred Akwoch, undersecretary ...anished as a result of those conflicts, scientists believed that the wildlife of Southern Sudan had also disappeared. Recently, though, reports from within S...

Marine phytoplankton changes form to protect itself from different predators

...onses are often seen in higher plants, but this is believed to be the first report of such a complex and species-specific response in marine phytoplankton. Hay suspects scientists may find other examples of complex defensive strategies when they look more closely at other single-celled organisms. The resp...

UCF nanoparticle offers promise for treating glaucoma

...n shown to block the activity of an enzyme (hCAII) believed to play a central role in causing glaucoma. The disease involves abnormally high pressure of the fluid inside the eye, which, if left untreated, can result in damage to the optic nerve and vision loss. High pressure occurs, in part, because of a ...

Children of smokers have more than 5 times higher levels of a nicotine toxin

...es during sleep. Nearly 40% of under-fives are believed to be exposed to tobacco smoke at home, and smoke may be responsible for up to 6,000 deaths per year in young children. The authors say: ‘Babies and children are routinely exposed to cigarette smoking by their carers in their homes, without the l...

Turn-ons and turn-offs for neurons

...s. Stress, addiction, learning and disease are all believed to change neuronal gene expression by mechanisms involving gene accessibility without changes in DNA sequences, a process called epigenetics ("above and beyond the gene”). Switching gene expression “on” and “off” is of utmost importance when study...

Ancient retrovirus sheds light on modern pandemic

...0 copies of PtERV1 and humans have none." It is believed that retroviruses have been entering the genome for many millions of years, and so humans share many retroviral DNA fragments with their primate cousins. Such vestiges of primitive infection, rendered inactive by eons of genetic mutation, make up abo...

Scientists close in on missing carbon sink

... dioxide up in the winter. As a result, scientists believed that there was relatively less carbon in the air above mid-latitude and upper-latitude forests, presumably because trees and other plants were absorbing high amounts. Conversely, scientists had assumed a large amount of carbon was coming out of th...

'Insulator' helps silence genes in dormant herpes virus

...to the protein. "By binding in this manner, we believed the CTCF protein was interacting with other viral proteins to form a type of insulator in the virus structure," Zhou says. To verify that it was an insulator at work, the researchers then inserted copies of the structure into fruit fly embryos to...

Amphibians in losing race with environmental change

...ine, 32 percent are threatened and 168 species are believed extinct. The impacts of changes are far more pervasive on amphibians than many other vertebrates, such as birds or mammals. "Historically, amphibians were adept at evolving to deal with new conditions," Blaustein said. "What they are doing is show...

Molecule that destroys bone also protects it, new research shows

...y. Gaffen noted that until recently, immunologists believed there were only two major types of "T helper" cells -- TH1 and TH2 -- which were believed to be responsible for nearly all immune system activities. "This paradigm underwent a sea change...

Double the death rate from cirrhosis for 'blue collar' men

...th largest overall killer of men. Cirrhosis is believed to develop in about 15 percent of people who drink heavily for more than a decade ?three to four drinks a day for men and two to three drinks a day for women. "Lower socio-economic groups appear to have increased their harmful alcohol consumption...

Dealing deadly cancers a knockout punch

...tion to killing cancer cells directly, reovirus is believed to activate an anti-tumor immune response through the body's natural killer cells and T cells. Through this mechanism, which persists for weeks or months, the body continues to fight off cancer long after the virus clears from the body. Future ...

Palau's coral reefs show differential habitat recovery following the 1998 bleaching event

Coral reef bleaching, believed to be one of the detrimental effects of climate change, may receive a welcomed "buffer" through effective local management, according to new research by a team of scientists recording the long-term recovery of coral reefs in Palau and elsewhere. "It...

Spud origin controversy solved

...race introductions originated in the Andes, others believed that the introductions came from Chile. While there are multiple lines of evidence to support each theory, the Andean introduction hypothesis stems from the belief that the Canary Islands landraces are solely of Andean origin. Although almost all cur...

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Breaking Biology News(10 mins):New tools help neuroscientists analyze 'big data' 2New tools help neuroscientists analyze 'big data' 3New tools help neuroscientists analyze 'big data' 4New tools help neuroscientists analyze 'big data' 5What constitutes an effective response to the global 'diabesity' tsunami? 2
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Breaking Medicine News(10 mins):Health News:Community Health Center of Snohomish Releases Article Focusing on Educating the Chronically Ill About Chronic Disease Management 2Health News:Community Health Center of Snohomish Releases Article Focusing on Educating the Chronically Ill About Chronic Disease Management 3Health News:Alta Resources To Fill Approximately 1,200 Positions In Fort Myers 2Health News:Alta Resources To Fill Approximately 1,200 Positions In Fort Myers 3Health News:Alta Resources To Fill Approximately 1,200 Positions In Fort Myers 4Health News:Austrian Laboratory Leader, Labors.at, Fuels Growth with the hc1® Healthcare Relationship Cloud™ 2Health News:FS Local Community Member H2T Elite Dryland Training Is Set to Open Its Doors 2Health News:Lifestyle choices may affect the long-term heart health of childhood cancer survivors 2
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