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Tag: "behind" at biology news

'Punctuated' evolution in the human genome

...ntists speculate that the molecular driving forces behind this "punctuated" duplicative activity may have been changes in transcriptional status or chromatin conformation. "Other regions may show different temporal biases," explains Eichler. "The important implication here is that episodic bursts of activi...

Hybrid grass may prove to be valuable fuel source

...e, drops its slender leaves in the winter, leaving behind tall bamboo-like stems that can be harvested in early spring and burned for fuel. Rhizomatous grasses such as Miscanthus are very clean fuels, said Dohleman, who is studying for a doctorate in plant biology. Nutrients such as nitrogen are transferre...

Hide and seek: Researchers discover a new way for infectious bacteria to enter cells

...rt and Veiga investigated the underlying machinery behind this uncommon invasion strategy, which they knew depended on an interaction between a protein on the surface of the bacteria, known as InlB, and a protein called Met on the surface of the cell it was invading. They discovered that when InlB intera...

Gene discovery sheds light on causes of rare disease, cancer

...rt and Veiga investigated the underlying machinery behind this uncommon invasion strategy, which they knew depended on an interaction between a protein on the surface of the bacteria, known as InlB, and a protein called Met on the surface of the cell it was invading. They discovered that when InlB intera...

Study identifies gene in mice that may control risk-taking behavior in humans

...ers have identified a possible genetic explanation behind risk-seeking behavior. Scientists at Fred Hutchinson Cancer Research Center have found that a specific neurodevelopmental gene, called neuroD2, is related to the development of an almond-shaped area of the brain called the amygdala, the brain's emo...

Neurologix announces positive results of gene therapy clinical trial in Parkinson's disease

...awn and the incision closed. No hardware was left behind following this procedure, and all patients were discharged within 48 hours of the procedure. About Neurologix Neurologix, Inc. is a development-stage company, which through its subsidiary, Neurologix Research, Inc., is engaged in the research and...

Bacteria recognize antimicrobials, respond with counter-defenses

...ns of the bacteria are difficult to treat, and are behind the increase of salmonellosis in people. Some food science institutes anticipate that virulent strains of salmonella will become more common throughout the food chain. Learning how this sometimes deadly organism fights back against the immune system ...

AIDS expert says global strategy needed to combat feminization of HIV/AIDS

...quences of so many young mothers dying and leaving behind children who may also be infected as well as orphaned, women deserve a separate strategy. He also points out that medical research suggests hormonal and developmental factors place young women at greater risk than men for contracting the virus when ...

Simple sea sponge helps scientists understand tissue rejection

...research is to provide insights into the machinery behind human tissue rejection and immune responses in hopes of someday being able to control these processes and save lives. ...

Toxic flood lifts lid on common urban pollution problem

...leans. But the water - and the muck it is leaving behind -- also owes its contamination to a source as mund...alarms about the contaminated waters and scum left behind by the retreating flood. Early September test results released late last week showed high levels of ...

The roots of civilization trace back to ... roots

... the open, relatively treeless savannah, they left behind the rain forest and its abundance of fruit and leaves, the mainstays of modern chimpanzee diets. Laden and Wrangham believe that savannah-dwellers may have adopted game as their primary food in place of fruit. But for a fallback food, they may well h...

“Hitchhiking?Viruses as Cancer Drug Delivery System

... the open, relatively treeless savannah, they left behind the rain forest and its abundance of fruit and leaves, the mainstays of modern chimpanzee diets. Laden and Wrangham believe that savannah-dwellers may have adopted game as their primary food in place of fruit. But for a fallback food, they may well h...

Genomics researchers discover protein deficit that causes drug toxicity

...ne had been able to explain the cellular mechanism behind it. ...

DNA from feathers tells tale of eagle fidelity

.... By performing DNA analysis on the feathers left behind at nesting sites, the researchers were able to identify individual Eastern imperial eagles in a nature reserve in Kazakhstan. Their analysis showed that not one adult strayed from its mate - a degree of fidelity highly unusual among birds, the vast m...

Study charts origins of fear

...lth. "By understanding the biomolecular mechanisms behind fear, we could potentially create therapeutic ways to ease emotional pain in people. Imagine reducing the ability of distressing events, such as amputations, to be permanently imprinted in the brain." Zhuo says that fear memory does not occur imm...

Skull study sheds light on dinosaur diversity

...y. But as prevalent as titanosaurs were, they left behind surprisingly few skulls. Paleontologists have found plenty of other titanosaur bones, providing a picture of a group of sauropods with specialized limb bones. Wilson began to appreciate the finer points of titanosaurs as a graduate student, when he...

Infectious disease expert warns of spread of Rocky Mountain spotted fever

...t carry the bacteria and then bite humans, leaving behind the tick's bacteria-filled saliva. Once inside the body, the infection spreads rapidly, causing inflammation of the blood vessels, shock and the build-up of fluid inside the lungs and brain. The precise origins of Rocky Mountain spotted fever are not...

Hepatitis C complicated by morphine withdrawal

...rs extended their study by examining the mechanism behind these observations. MW and PW inactivated the IFN-alpha promoter (the switch for making IFN-alpha) by directly inhibiting its activator, interferon regulatory factor-7 (IRF-7), and this effect was more pronounced in HCV replicon-containing cells. F...

Female butterflies go for sparkle -- not size -- when choosing to mate

...ch was to explore some of the evolutionary reasons behind butterfly wing patterns in the African satyrid butterfly, Bicyclus anynana. The findings were surprising in the context of the natural world, where dramatic colors and physical features often win the sexual-selection game, according to the UB resear...

Scientists and engineers apply nature's design to human problems

...ecological processes. These are guiding principles behind the Georgia Tech Center for Biologically Inspired Design."CBID's mission is to promote world-class interdisciplinary research and education at Georgia Tech in biologically inspired design. CBID researchers also want to communicate to government and i...

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