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Tag: "ruled" at biology news

Selective marker found to indicate aggressive form of breast cancer

... certain once the other forms of breast cancer are ruled out," DiRenzo said. "This type of breast cancer is generally difficult to manage, but several important studies have shown that it is more likely than other breast cancer subtypes to respond to certain types of therapy, which highlights the need for...

Global 'sunscreen' has likely thinned, report NASA scientists

...ening trends ?changes in cloud cover have not been ruled out ?another new research result supports that conclusion In a paper published March 8 in the American Geophysical Union's Geophysical Research Letters, a research team led by Anastasia Romanou of Columbia University's Department of Applied Physics ...

Napoleon's mysterious death unmasked, UT Southwestern researcher says

... poor prognosis." Napoleon, born Aug. 15, 1769, ruled France in the late 1700s and early 1800s. He conquered much of Europe, but he was ultimately defeated at the battle of Waterloo in 1815. The British then exiled him to St. Helena, an island in the South Atlantic Ocean. He died May 5, 1821. The ...

Meat and two neutrons -- the key to a longer life

...ies, but it is a prospect that certainly cannot be ruled out.' Charles Cantor, a professor of biomechanical engineering at Boston University, said: 'Preliminary data indicates that this approach can potentially increase lifespan without adverse side effects. If this is borne out by further experiments t...

Uncovering DNA's 'sweet' secret

...t would not exist. Although Egli's structure has ruled out six-carbon sugars as viable alternatives for the sugar backbone of DNA, the existence of a plethora of sugars - as well as alternative bases - make for an almost endless number of possibilities from which nature selected the winning DNA combinati...

Buildup of damaged DNA in cells drives aging

...evels of growth hormones in the progeroid mice and ruled out the possibility that this suppression was due to problems with their hypothalamus or pituitary glands, which regulate growth hormone secretion. Furthermore, they demonstrated that if normal adult mice were exposed to a drug that causes DNA damage...

Trotting with emus to walk with dinosaurs

...are two-toed and have an attitude problem, so that ruled them out, says Breithaupt. Rheas have three toes, but are "like working with a bunch of kindergarteners on too much sugar," he said. That left emus, which are perfect: three toes, the right size, and relatively easy to work with. What's more, the...

Man may have caused pre-historic extinctions

...f the horse beyond the arrival of humans cannot be ruled out. The PNAS paper develops a new statistical method to help resolve the inherent problems associated with dating fossils from the Pleistocene period. The aim is to provide a far more accurate timetable for the extinction of caballoid horses and ma...

Newborn screening can cause unnecessary parental stress

... six months after their child's diagnosis had been ruled out, they reported more worry about their child's ...ns about the length of time before a diagnosis was ruled out. Half of all parents in the false-positive group said they hadn't been told, or didn't remembe...

RNA found in the cellular centrosome of surf clams

... of DNA inside the centrosome of the cell has been ruled out by others' previous work, the presence of RNA had not been confirmed or denied until now," says Palazzo. "Our results show there are at least five specific forms of RNA in the clam cell centrosome which could be related to structure, encoding of ...

Brain's 'gambling circuitry' identified

... of their gambling task and analysis of their data ruled out involvement of these functions, meaning that they had, indeed, isolated the "gambling" function of these regions. Of the practical implications of their findings, the researchers wrote that "pathological behaviors ranging from addiction to gamb...

Federal testing for mad cow disease a failure, law review editor says

... had built to USDA specifications. But the agency ruled that the BSE test was licensed only for "surveillance" of animal health, and rejected Creekstone's request because it implied "a consumer safety aspect" that was "not scientifically warranted." The agency invoked the 1913 Virus-Serum-Toxin Act, inte...

Gene screen for breast cancer better than pathologist's 'eye'

... (33 percent) fluid samples containing cancer, and ruled out the disease in nearly all cases negative for cancer (92 of 93 samples, 99 percent). QM-MSP doubled the cancer detection rate to 71 percent by spotting 15 of 21 samples known positive for cancer. Of 76 samples negative for cancer, QM-MSP concurr...

Heart has enough oxygen to survive hypothermia, CPR crucial

Researchers from Norway may have ruled out insufficient oxygen supply to the heart as the critical variable in whether a mammal's heart survives while in a hypothermic state. Writing in the July issue of the American Journal of Physiology-Heart and Circulatory Physiology, researchers fo...

New human retrovirus originated in mice

..., said Ganem, an indirect link to cancer cannot be ruled out, since "in cancer research these days, there is a lot of interest in the stroma as the soil in which cancer arises." He added that the chronic inflammation from infection of stromal tissues may play a role in triggering such cancers. DeRisi obse...

FSU biologist says new dinosaur is oldest cousin of Tyrannosaurus rex

...amily tree –?95 million years before cousin T. rex ruled the roost. Researchers say the identification of the oldest basal (primitive) tyrannosauroid yet will shed light on the early evolution and geographical distribution of its ancestors –?small therapod dinosaurs known as coelurosaurs that were the clo...

Utah researchers confirm chromosome may harbor autism gene

...ouple. As part of the study, the researchers also ruled out one gene that appeared to be a good candidate for being linked to autism. They're now looking at other genes for a connection to the disorder. Published in Human Heredity online, the study is part of the Utah Autism Research Project. The researc...

Warming trend may contribute to malaria's rise

...tion also may play roles, climate change cannot be ruled out. "Our results do not mean that temperature is the only or the main factor driving the increase in malaria, but that it is one of many factors that should be considered," Pascual said. The new study is slated to be published online this week in t...

Pregnancy drugs can affect grandkids

...song-sharing among non-neighbours declined. Having ruled out other explanations, such as the stage of the breeding season and competition intensity, the researchers say this change in song-sharing is due to lack of interaction between individuals isolated by habitat barriers. According to the study's auth...

Bird song changes sound alarm over habitat fragmentation

...song-sharing among non-neighbours declined. Having ruled out other explanations, such as the stage of the breeding season and competition intensity, the researchers say this change in song-sharing is due to lack of interaction between individuals isolated by habitat barriers. According to the study's auth...

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