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Tag: "reason" at biology news

First wolverine radio-collared in Pacific Northwest

...comfortable space until they are released. A key reason for conducting this research is the need to understand the wolverine's habitat requirements in the Northwest and maintain the habitat without conflicting with other land uses. With help from satellites 600 miles overhead, Aubry hopes to follow wolver...

Oceans are 70 percent shark free

... are absent from the deep but suggest one possible reason could be due to lack of food. They warn their finding has environmental implications. Professor Monty Priede, Director of Oceanlab at the University of Aberdeen, said: "Sharks are apparently confined to around 30% of the world's oceans, and all p...

Liver cancer linked to cellular repair pathway

...new cases diagnosed in 2005 and 15,420 deaths. One reason for the rising rates is the increasing prevalence of obesity, which raises the risk of liver cancer five- to six-fold, said Anna Mae Diehl, M.D., chief of Duke's gastroenterology division and senior author on the study. The liver's attempts to repai...

New evidence questions the simple link between prion proteins and madcow disease

... we don't tend to see this in animals, and have no reason to believe it would be different in humans," comments Jeffrey. ...

Free HIV tests cheaper than charging when goal is preventing AIDS

...manjaro Christian Medical Centre in Tanzania. "One reason is because there is much greater access now to antiretroviral therapy." Thielman acknowledges that the cost of free testing is a significant factor for organizations with limited resources. "Cost is probably the biggest barrier, but if the goal is ...

MRSA use amoeba to spread, new research shows

...y, it has no known animal host". "The most likely reason is that Legionella and many pathogens learned their pathogenicity after sparring with single-celled organisms like amoeba for millions of years. Because our human cells are very similar to these primitive, single-celled organisms, they have acquired...

Scientist measures role of science's coolest player: The snow

...ings and roadways, says Vavrus, and "there's every reason to think we'll see even stronger effects in the future," he adds. In forthcoming simulations, Vavrus plans to continue exploring the effects of both nearby and faraway snow cover on local climate conditions. ...

Why the Amazon rainforest is so rich in species

...e ages were causing the origin of new species ?the reason normally given. Instead, we think that idiosyncrat...rticular groups of species to home in on the exact reason why some species evolve so rapidly, while others in the same rainforest do not split into new specie...

New evidence supports century-old theory of cancer spread

...ll hybridization with white blood cells as a major reason that cancer metastasizes or spreads to other parts of the body. "Cancer cells exhibit a remarkable number of traits normally attributed to white blood cells known as macrophages, including the ability to migrate to lymph nodes and distant organs and...

Johns Hopkins flu expert calls for mandatory vaccination of health care workers

...om other hospitals have shown that the most common reason cited for not getting a vaccination is a lack of t...he surprise of those conducting these surveys, the reason most likely to motivate health care workers to get the shot is that it benefits patients, not themse...

UCLA discovery will aid in treatment of patients with a deadly brain cancer

...e to induce long-term disease suppression gives us reason for hope." The study, Mischel said, also may have important implications in other cancers. "Many cancers have a similar combination of a mutant cancer-causing protein and either the expression or loss of the PTEN protein," Mischel said. "The inter...

'Creationism is not science' ?making the case for Darwin at UCL

...n compared to that needed in the 1940s. The simple reason is that the bugs you are fighting have evolved." Commenting on whether this turn towards the Intelligent Design world view could hit the UK too, Professor Ruse (whose book The Evolution-Creation Struggle was published in June by Harvard University P...

Recreating 'Flowers for Algernon' with a happy ending

... mind-blowing ?we think we have a real fundamental reason to be optimistic," explained Silva. "Here is a drug that affects a key learning and memory pathway, and completely rescues the most common genetic cause for learning disabilities. We don't have to do extensive clinical trials for toxicity or safety...

Plant defenses prompt bacterial countermeasure in the form of 'island' DNA excision

...ws a more stealthy ?and successful ?invasion. The reason the strategy can be successful is that the plant has evolved to recognize the presence of only certain bacterial proteins as warnings of an infection. This means that the bacteria can, in principle, evade detection if it can shut down production of t...

Clinical trial to test stem cell approach for children with brain injury

... death and disability among children, and the main reason children die from trauma is brain injury, Cox said. The proposal was under review for a year. The U.S. Food and Drug Administration approved Cox's Investigational New Drug (IND) application in September. The UT-Houston CPHS, the university's instit...

Max Planck researchers make a breakthrough in plant stem cell research

... stopping its negative feedback." That is also the reason for earlier observations, that Arabidopsis samples with defective WUSCHEL genes only develop very small meristems, and have trouble growing. The researchers in Tübingen have now discovered the same effect in mutants whose ARR7 gene is constitutively...

New technique multiplies life span in simple organisms

... potent pro-aging than an anti-aging gene. And the reason was in part because of the similarity with this other gene, called HST1, which negatively regulated so-called protective genes. So we set out to test whether SIR2 could do the opposite of what everybody said it does." The researchers do not quarrel ...

Plants have a double line of defence

...the leaf epidermis cells more frequently. For that reason the scientists looked particularly at the question of exactly which function the PEN2 protein has in the defence against pathogens. PEN2 is an enzyme located in the membrane of what are called peroxisomes. These are spatially separated cell compartm...

Health benefits of a Christmas brandy

... known as an effective antioxidant so it stands to reason that brandy, technically a grape-based spirit, could offer similar benefits, Dr Troup said. "We thought the antioxidants might disappear during the brandy distilling process but we have found this is not actually the case," he said. The research, b...

Removing egg from nest may help save endangered whooping crane

...ment the program is so successful that there is no reason to collect more eggs," said Boyce. "But for Parks Canada to intervene with a formal policy to prohibit future egg collecting is inappropriate and flies in the face of the data, as we present in our paper." Boyce suggests several reasons why a chick ...

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