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Tag: "concept" at biology news

Leading scientists rank endangered dolphins, porpoises most in need of immediate action

...tion awarded a prize to a promising gillnet design concept using glowing ropes and stiffer nets that may help cetaceans see gillnets in order to avoid them and to escape if they do accidentally swim into the net. Species and populations designated in the report as among the top priorities for investment of ...

Researchers predict infinite genomes

...in. The pan-genome is more than mere syntax. The concept has real implications for molecular biology. Many ...que activity. TIGR researchers say the pan-genome concept also underscores the limits of traditional known genomes. Researchers often refer to a "type" genome...

The synapse is a shotgun

..., said Sejnowski, provide evidence for a different concept of the synapse. "The image of this ganglion is not one of a simple synapse with a single release site, but multiple release sites. And it shows alpha 3 receptors within the postsynaptic region, but alpha 7 receptors outside this region. Our model sho...

'Punctuated' evolution in the human genome

... is that episodic bursts of activity challenge the concept of gradual clock-like changes during the course of genome evolution. Since duplications are important in the birth of new genes and large-scale chromosomal rearrangements, it may follow that these processes may have gone through similar episodes of a...

Drawing with DNA: 'Bioart' illuminates genomics

...is not knowledge ?it's not even information. A key concept of 'Ecce Homology' is to make an important subject like genomics accessible to the general public." "Ecce Homology" uses a combination of dynamic media, computer vision and computer graphics to visualize genomic data. Custom software turns genes ?i...

Researchers Discover That Microbes Can Produce Miniature Electrical Wires

...biology,?said Lovley. “This completely changes our concept of how microorganisms can handle electrons, and it also seems likely that microbial nanowires could be useful materials for the development of extremely small electronic devices.?/p> “The microbial world never stops surprising us,?said Dr. Aristi...

Chickadees can help humans get their bearings

...ab experiments, the birds consistently ignored the concept when a prominent landmark, in this case a blue wall, was present. "Getting oriented is an important part of solving many spatial navigational problems, such as locating your car in the parking lot at the end of a long day in the office. This discove...

Researchers develop promising new gene network analysis method

...to a much more complex system: humans. The overall concept ?the time series experiments and the combination of statistics and network theory ?is quite novel. This should be an important new approach to studying gene expression." ...

Cancer drug slows poxvirus in mice

...ected cells, and also provides new support for the concept of treating viral infections by targeting specific host cell molecules rather than the viruses themselves," says NIAID Director Anthony S. Fauci, M.D. The senior author of the paper, published online this week in the journal Nature Medicine, is Dani...

Discovery of New Dopamine Action May Yield Alternative Psychiatric Drugs

...physiologically relevant evidence for the emerging concept that beta-arrestin 2 not only controls desensitization but also participates in slow synaptic transmission here by acting as a scaffold for signaling molecules in response to dopamine receptor activation," Caron said. "The observations also provide ...

Lipids get new comprehensive classification system

...es of individual lipids and their derivatives. The concept underlying the new methodology is that head groups are drawn on the right side and the hydrocarbon chain extends to the left. In the simplest case of the fatty acid derivatives, the acid group is drawn on the right and the hydrophobic hydrocarbon cha...

Designing vaccines by computer

...itute for Vaccine Research are using a very simple concept to help speed up the development of vaccines. They are studying fragments of 'foreign' proteins that have been shown by experiments to effectively trigger a response by the immune system. They look for common patterns in their sequences or structures...

The lopsided brain: Attention bias is shared by humans and birds

...ward bias in pecking. The experiment is similar in concept to those that reveal pseudoneglect in humans--so-called cancellation tasks in which subjects are asked to "cancel-out" evenly distributed visual targets on a sheet of paper placed before them. The finding that birds also exhibit spatial pseudoneglec...

Measuring Enzymes At End Of Cancer Pathway Predicts Outcome Of Tarceva, Taxol

...2 is the real target of Tarceva. "This presents a concept that describes how Tarceva works, and it also shows that we have a technology that can rapidly measure the true activity of CDK2 in a tumor sample," Ueno says. First author Fumiyuki Yamasaki, M.D., Ph.D., a post-doctoral fellow, is presenting the fin...

NSAID drug protects against intestinal tumors in mice, despite poor diet and gene losses

...or genes or diet," says Yang. "We are testing this concept further, including exactly how the p21 gene gets activated." ...

Scientists discover that three overlapping signals in embryo help get the backbone right

...y'll become until they get the proper signal. This concept is at the root of today's excitement over embryonic stem cells, which are basically naïve cells that, theoretically, can be stimulated to become any tissue of the body. In fact, the proteins normally used by the embryo have recently been put to use ...

MUHC scientists describe genetic resistance to rampant virus

...ls to recognize and terminate them. "This is a new concept in natural disease resistance," notes Dr. Vidal. "Our research suggests there are many different mechanisms for fighting viruses; in the future we expect to discover additional resistant genotypes." CMV infects most of the world's organisms, includi...

Harmful chemicals may reprogram gene response to estrogen

...lieves more research needs to be done to test this concept in people. "NIEHS is partnering with the National Academy of Sciences to fund additional research on early-life exposures and cancer risk in human populations," she said. ...

Navigating an integrated yeast network

...Medical School, USA, and colleagues found that the concept of 'network themes' ?recurring complex patterns that encompass multiple occurrences of network motifs ?allows the building of 'thematic maps' of interactions between macromolecules that can be tied to biological phenomena and may help represent more ...

Love's all in the brain: fMRI study shows strong, lateralized reward, not sex, drive

...of being in love." Brown noted that "an important concept is that the caudate probably integrates huge amounts of information, everything from early personal memories to one's personal notions of beauty. Then, this brain region (and related regions of the basal ganglia) helps to direct one's actions toward ...

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