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Tag: "view" at biology news

Ohio University researchers discover evolutionary oddity in flamingos

...d was donated by the Brevard Zoo in Florida. A 3-D view of the bird's head was created using a new computed tomography (CT) scanning technique developed by the Ohio University team that highlights blood vessel anatomy. The researchers noticed large oval masses of erectile tissue located on the floor of th...

3-D ultrasound scanner could guide robotic surgeries

...ew scanner would provide surgeons a more realistic view of the organ they are working on. "All the techn...inside catheters threaded through blood vessels to view the vasculature and heart from the inside. Earlier this year, the team reported another advance: a...

Scientists use gene signatures to match cancer and other diseases with potentially effective drugs

...aper's lead author. The researchers said that in view of these promising results, they are proposing a large-scale effort -- along the lines of the Human Genome Project -- to map connections among genes and diseases to accelerate the development of new and improved therapies for a wide range of disorder...

Leptin has powerful effect on reward center in the brain

...rain has profound implications for how researchers view the integration of metabolic signals in the brain," said the senior author, Ralph DiLeone, assistant professor of psychiatry. In this study the researchers demonstrated that leptin signaling, via its receptor, occurs in the dopamine neurons in the...

Learning the language of DNA

...f the consortium have also upended the traditional view that each gene has a single promoter and a single starting position. The team found that, while genes that are only turned on in a specific tissue or at a specific point in time use the traditional model of a single start site, genes used in many t...

Man may have caused pre-historic extinctions

...National Academy of Sciences (PNAS). The accepted view had previously been that the wild horses became extinct long before the extinction of mammoths and the arrival of humans from Asia - ruling out the possibility that they were over-hunted by man. One theory had been that a period of climate cooling wi...

New study reveals structure of E. coli multidrug transporter protein

...g, this new x-ray structure adds another important view of some general structural features across multi-drug resistant transporter families." Other authors of the study include Yong Yin, Xiao He, Paul Szewczyk, and That Nguyen of The Scripps Research Institute. ...

Beaver dams create healthy downstream ecosystems

...g the dry summer season. "This study broadens the view of the importance of beaver in the valley bottoms beyond the upstream ponds," Westbrook said. "We found that upstream ponds were not the main hydrologic effect of the dams in the Colorado River valley. Instead, the beaver dams greatly enhanced hydrol...

Study provides first look at the 'birth' of a retina cell

...o become rods. They achieved this unique and early view of rod development by creating a mouse model using...fated to perform a certain function. "We can now view rod precursor cells at a crucial juncture," says Swaroop. "They are committed to becoming rod cells,...

A new view on Lyme disease: Rodents hold the key to annual risk

...-two years out. Their findings upset the long-held view that deer and climate are the best indicators of disease risk. I. scapularis larvae hatch in midsummer and acquire infection after feeding on an infected mouse or other small animal. Larvae detach after several days of feeding, then molt into nymph...

Study provides new understanding of spontaneous hybridization

...can be a potent evolutionary force, broadening our view of the mechanisms by which populations adapt to their environments," explain the authors. ...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...ants like the yellow water lily (Nuphar). "We can view these basal angiosperms like the Hubble Space Telescope, which helps us get a deeper look into the early history of the universe--these plants allow us to take a deeper look into genomic history." Darwin noticed that flowering plants appear suddenly...

DNA to the defense

...onse. This finding challenges scientists' general view of how a chromosome is functionally organized. An article describing the research will appear online this week in the journal Genome Research . African sleeping sickness, or trypanosomiasis, is caused by a protozoan parasite known as Trypanosoma...

Loosen up, DNA: Leukemia gene changes genetic packaging

... make tumor cells grow, fitting a more traditional view of how genes are turned on and off. The new findings make the molecule something of a super-oncogene with more global control than scientists had considered. The signaling system thus seems unique because it can both cause cancer directly, or knock o...

Funding and bureaucracy, not access to journals, are chief obstacles to scientific productivity

...highly consistent and represent a strong consensus view of the biomedical research community. ...

Researcher gives hard thoughts on soft inheritance

...ards says. "But from a molecular biology point of view there is a mechanism to do soft inheritance, and epigenetic inheritance can be construed as a form soft inheritance. That's all I'm saying. The really heretical thing to say is that the environment could be pushing the epigenetic information in a di...

Ten years later, Dolly is still making headlines

...s ?and exposing our members to disparate points of view so they ?as the most highly trained scientists in the world ?can draw their own conclusions," said John Lisack, AAPS executive director. "With topics like cloning and biogenerics headlining this year's event, there is no more exciting and challenging...

Carnegie Mellon researchers discover key deficiencies in brains of people with autism

...ed functional magnetic resonance imaging (fMRI) to view which parts of the brain were activated in people ... systems of the brain, the team used fMRI scans to view the patterns of activation in the brains of autistic and normal participants while they read a serie...

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

...at spotting breast cancer cells as a pathologist's view with a microscope. The screen, developed by Sara Sukumar, Ph.D. and Mary Jo Fackler, Ph.D., first separates cells from fluid, then sifts through the cells' DNA for chemical tags on certain genes associated with cancer. Reporting in the June 1 is...

Agriculture and tropical conservation: rethinking old ideas

It's a long-held view in conservation circles that rural peasant activities are at odds with efforts to preserve biodiversity in the tropics. In fact, the opposite is often true, argue University of Michigan researchers John Vandermeer and Ivette Perfecto. Combining ca...

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