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Tag: "independent" at biology news

Liver cancer patients with high serum levels of hepatitis B virus face poorer outcomes

...ith chronic HBV infection, and this association is independent of an individual’s hepatic reserve, tumor and clinical factors,” the authors report. Though the study was limited by a small patient cohort, and the fact that all had advanced disease, the authors concluded, “Based on the present findings, the in...

New findings challenge established views on human genome

...w of our genetic blueprint as a tidy collection of independent genes, pointing instead to a complex network in which genes, along with regulatory elements and other types of DNA sequences that do not code for proteins, interact in overlapping ways not yet fully understood. In a group paper published in the June...

Reconstructing the biology of extinct species: A new approach

...truct how extinct species moved that is completely independent of analysis of the limb structure. For the first time, we can test our previous conclusions using a new source of information." ...

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

...a mother that smokes was found to have the biggest independent effect on cotinine in the urine – quadrupling it. Having a smoking father doubled the amount of cotinine, one of chemicals produced when the body breaks down nicotine from inhaled smoke to get rid of it. Sleeping with parents and lower temperatur...

Gene malfunctions cause schizophrenia, depression symptoms in mice

...l illness," they wrote. "We have shown that two independent missense mutations in mouse Disc1 elicit distinct physiological, pharmacological, neuroanatomical, and behavioral phenotypes, which when taken together are strikingly consistent with the emerging picture from clinical and basic studies of DISC1 as a ...

Simple home spit test to spot deadly pre-eclampsia

...p and can be done at any time. As a metabolic test independent of blood pressure, it may obviate the need for hospital admission,' said retired hospital rheumatologist Brian Owen-Smith, who invented the test. The trial, which will eventually involve 1000 women, is underway at St Richards Hospital in Chicheste...

Invasion of the island bats

...region. As the culmination in the study of several independent bat groups, this article shows that reverse colonization is a feature of the entire Caribbean bat community, encompassing groups of bats as different from each other as aerial insectivores, nectarivores, and frugivores. The evolution of Caribbean...

Researchers attach genes to minichromosomes in maize

...nnot stack multiple genes on a separate chromosome independent of the others. By stacking genes on minichromosomes, scientists could create crops that have multiple beneficial traits, such as resistance to drought, certain viruses and insects, or other stresses. In addition, minichromosomes could be used for ...

Iowa State scientists demonstrate first use of nanotechnology to enter plant cells

.... Spherical in shape, the particles have arrays of independent porous channels. The channels form a honeycomb-like structure that can be filled with chemicals or molecules. "One gram of this kind of material can have a total surface area of a football field, making it possible to carry a large payload," Trewy...

Hexavalent chromium in drinking water causes cancer in lab animals

...echnical Reports Review Subcommittee completed its independent peer review of the sodium dichromate dihydrate research report. Sodium dichromate dihydrate is an inorganic compound containing hexavalent chromium that was used in the NTP studies. The NTP is located at the NIEHS, part of the National Institutes of ...

Study warns deep-sea mining may pose serious threat to fragile marine ecosystems

...eigh the benefits, says Halfar, there have been no independent impact assessment studies of the proposed massive sulphide mining sites. "Over 250 active and fossil deposits have already been found. And the company operating in Papua New Guinea has already staked claims off the coast of Tonga and Fiji," he says. ...

Sleep quantity affects morning testosterone levels in older men

...nighttime sleep measured by polysomnography was an independent predictor of the subjects?morning total and free testosterone levels. "The results of the study raise the possibility that older men who obtain less actual sleep during the night have lower blood testosterone levels in the morning," said Penev. "...

Rapid response was crucial to containing the 1918 flu pandemic

...asures? What made the difference, according to two independent studies funded by the National Institutes of Health (NIH), was not only how but also how rapidly different cities responded. Cities where public health officials imposed multiple social containment measures within a few days after the first local c...

UCI scientists reconstruct migration of avian flu virus

...to the next location. This parallel evolution ?the independent evolution of similar traits ?enables H5N1 to spread quickly, the scientists believe. "The ability to develop the right mutation allows the virus to hop from one host type to the next," said Robert Wallace, UCI postdoctoral researcher and lead auth...

30+ AIDS vaccine clinical trials in 24 countries, research occurring on every continent

...) January 2007 Annual Issue of VAX, an editorially independent bulletin on AIDS vaccine research published by IAVI, reports that 13 new preventive AIDS vaccine trials were initiated in eight countries around the world in 2006. There are now more than 30 trials ongoing in 24 countries, across every continent. T...

Africa's first large-scale HIV vaccine study launches

...all the trial sites. In addition, there will be an independent Data and Safety Monitoring Board, a group of independent experts, not affiliated with Merck and Co. Inc, the HVTN, or the clinical trial investigators, who w...

Homing pigeons get their bearings from their beaks

...y suggests that the birds sense the magnetic field independent of their motion and posture and thus can identify their geographical position. The researchers further believe that this ability is not unique to homing pigeons as they expect that the ‘pigeon-type receptor system ?might turn out to be a universal...

Rotavirus can spread beyond the intestine

...ted to the presence of antigen in the blood but is independent of the presence of diarrhea. The finding of infectious rotavirus in the blood suggests that the disease is not limited to just the intestine. A related perspective by David Candy discusses the study’s findings further. ...

Genes and biomarkers that allow doctors to choose the right therapy for the right patient

...esearchers also determined that KRAS mutations are independent of another predictive marker of cetuximab response, skin toxicity, which appears through a variety of forms including rashes, eczema and fissures. Skin toxicity also indicates a poor response to cetuximab. The study indicated that median survival i...

Racing neurons control whether we stop or go

...nse to a signal. "Our race model proposed that two independent processes were underway, one telling us to ‘go?and... answer this question, the researchers applied the independent race model to existing data from experiments that monitored brain activity in monkeys while they wer...

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