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Tag: "bear" at biology news

MU researchers to study the status of black bears in Missouri

...nt of Conservation to help manage Missouri’s black bear population. The researchers – Kaitlyn Faries, a s...better understand and effectively manage the black bear population.” Dave Hamilton, a resource scientist at the Missouri Department of Conservation, sai...

UI anthropologist, colleagues discover remains of earliest giant panda

...ment. “Pandas are very unique bears -– the only bear species that is known to exist wholly on a vegetarian diet,” says Ciochon. “The evolution of this unique dietary specialization probably took millions of years to refine. Our new discovery shows the great time depth of this unique bamboo-eating speci...

Fat fish put obesity on the hook

...gy and genetics in this case – can be brought to bear on human problems.” According the U.S. Centers for Disease Control and Prevention, the prevalence of overweight and obesity have risen steadily over the past 30 years. Among adults aged 20–74 years the prevalence of obesity increased from 15.0% (1...

Want to save polar bears? Follow the ice

...’s watershed decision to propose listing the polar bear as "Threatened" under the Endangered Species Act, ...n—will remain into the near future. "The polar bear could be at the crossroads," said Scott Bergen, a landscape ecologist with WCS’ Living Landscapes Pr...

For many insects, winter survival is in the genes

...University. "Without these proteins, insects can't bear the cold and will ultimately die." Denlinger and his colleagues found nearly a dozen additional heat-shock proteins that are activated during diapause, a hibernation-like state that insects enter when temperatures drop. Insects can stay in this st...

Improved predictions of warming-induced extinctions sought

...sidered, and that better data should be brought to bear on the problem, especially information from the fossil record of Quaternary ice ages. The authors acknowledge, however, that they do not fully understand why so many species persisted during these ice ages, and caution that some genetic research sugg...

UC Davis researchers use heated nanoprobes to destroy breast cancer cells in mice

In experiments with laboratory mice that bear aggressive human breast cancers, UC Davis researchers have used hot nanoprobes to slow the growth of tumors -- without damage to surrounding healthy tissue. The researchers describe their work in the March issue of the Journal of Nuclear Medicine. "...

Mimicking how the brain recognizes street scenes

...li, such as gratings, bars, and line drawings that bear little resemblance to real-world images. "We put together a system that mimics as closely as possible how cortical cells respond to simple stimuli like the ones that are used in the physiology lab," said Serre. "The fact that this system seems to wor...

Scientists unveil piece of HIV protein that may be key to AIDS vaccine development

... a cautious handshake, which then becomes a hearty bear hug," says Gary Nabel, M.D., Ph.D., director of NIAID's VRC and co-author of the new paper. An effective HIV vaccine likely needs to induce antibodies that can sense and destroy multiple HIV strains. Scientists have sought such broadly neutralizi...

DNA analysis reveals rapid population shift among Pleistocene cave bears

...ess. To investigate the stability of ancient cave bear populations over time, the researchers obtained DNA samples from 29 cave bear teeth from three geographically close caves in the Ach Valley, near the Danube River in modern-day s...

Neuron cell stickiness may hold key to evolution of the human brain

... Science co-authors investigated whether CNSs also bear the signature of accelerated evolution. Explained Prabhakar, who devised the statistical methods and performed most of the computational analysis for this study, "We started with a set of 110,549 CNSs previously identified by whole-genome multiple...

How mammals fuel milk production may have implications for cancer

...c demands of the lactating mammary epithelial cell bear many similarities to those of tumor cells in that pathways controlling energy generation as well as carbohydrate, protein, and lipid synthesis must be coordinated to support the anabolic processes central to growth,?the researchers wrote. “In this re...

Resistance and genetic sensitivity to sleeping sickness

... by classical chronic forms of the disease; others bear severe rapidly developing forms; still other people show no symptoms of human African trypanosomiasis, in spite of a long period of infection. This diversity in host clinical presentation in reaction to infection can have several sources: the host's ...

Does natural selection drive the evolution of cancer?

...nking of ecologists and evolutionary biologists to bear on cancer biology. Insights from their work may have profound implications for understanding why current cancer therapies often fail and how radically new therapies might be devised. A review by researchers at The Wistar Institute of current res...

Hospital-acquired infections -- Inevitable?

...an College of Medical Quality. The data seems to bear out the pervasive belief. In 2004, Pennsylvania's general acute care hospitals reported nearly 12,000 hospital-acquired infections (HAIs). These were associated with over 1,500 additional deaths, 205,000 additional hospital days, and nearly $2 billio...

Study suggests evolutionary link between diet, brain size in orangutans

...ientists have suggested that Borneo's morio orangs bear offspring more frequently than do Sumatra's orangs. Such relatively short intervals between births could themselves be tied to smaller brains in such higher primates as orangutans, van Schaik and Taylor wrote in their current report. "Larger-braine...

Researchers appeal for new regulations to save coral reefs from live fish trade

...estroyed and forgotten, it is the local people who bear the costs of reduced options for future development," they warn. ...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

...emaining spongy bone must redistribute the load to bear the weight, but this makes the bone support structure less efficient and leaves the bone more vulnerable to fracture. "A murine model for bone loss from therapeutic and space-relevant sources of radiation," by Sarah A. Hamilton, Neil D. Travis, Jef...

Viral hitchhiker inhibits Wolbachia bacteria's ability to proliferate

... its insect hosts and genetically tricking them to bear more infected females, the only sex that transmits the bacteria. Now, a new study from the MBL (Marine Biological Laboratory), published in the May 18 issue of PLoS Pathogens, demonstrates that a virus common to Wolbachia cells may be a key inhibito...

Neurons grown from embryonic stem cells restore function in paralyzed rats

... combination of treatments regained the ability to bear weight on the GDNF-treated limbs and to take steps and push away with the foot on that side of the body. "This research represents significant progress," says David Owens, Ph.D., the NINDS program director for the grant that funded the work. "It is ...

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