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Tag: "prepare" at biology news

Spring migration of pink-footed geese under threat

...usands of pink-footed geese (Anser brachyrhynchus) prepare for their spring migration north to breeding grounds in the Arctic, ecologists are warning that the escalating conflict between farmers and the geese is threatening the birds' survival. Writing in the new issue of the British Ecological Society's Jou...

Researchers solve mystery of how nuclear pores duplicate before cell division

...n and out of a cell's nucleus ?double in number to prepare for the split to come when a cell divides. Now, for the first time, scientists at the Salk Institute for Biological Studies watched as new funnel-like pore structures formed from scratch, and inserted themselves into the nuclear membrane. This disc...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

...ogical, physiological, and behavioral changes that prepare them for adulthood in open fresh and salty waters. In their innovative work, which is based on studying the gene expression profiles of hundreds of genes at a time in different fish populations, the researchers studied gene expression in two species...

Scientists re-engineer a well-known antibiotic to counter drug resistance

...nce but a total of 24 sequential chemical steps to prepare the new antibiotics; in this case, a single atom in vancomycin was altered to counter an analogous single atom change in the bacterial cell wall that accounts for the resistance. The results, Boger added, suggest that no matter how the VRE altered ...

Discovery may speed forest biotechnology

...climates shut down growth earlier in the summer to prepare for long, harsh winters. The genetic mechanisms that adapt trees to these conditions and control it are so strong that trees will behave about the same even if they are transplanted to warmer regions, the scientists say. For applied research, Straus...

Scientist-astronaut sends T-cells into space

...onur, Kazakhstan, this Saturday, Sept. 2, 2006, to prepare a crucial experiment designed to demonstrate how human immune response is suppressed in the weightless environment of space. Millie Hughes-Fulford, PhD, director of the Laboratory of Cell Growth at SFVAMC, scientific advisor to the Under Secretary ...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...ned aircraft. The method also makes it easier to prepare individual cells for laboratory investigation under microscopes. "Normally, to visually examine a cell, researchers use time-consuming fixation or solvent extraction techniques," says Brinker. "We can spin-coat a cell in seconds, pop the cell into an...

A rice future for Asia

...e as well as more basic information such as how to prepare a field for rice transplanting. "We hope they will then return home with a new sense of excitement about rice and its potential both in science and in the future development of Asia," said Dr. Kwanchai Gomez, the TRF's executive director. "Rice has ...

Mouse study reveals new clues about virulence of 1918 influenza virus

...ic is an urgent imperative as we pursue efforts to prepare for--and possibly thwart--the next flu pandemic," says NIH Director Elias A. Zerhouni, M.D. "This elegant research gives a detailed picture of the overzealous host reaction to infection by a fully reconstructed 1918 influenza virus," says NIAID Di...

Molecular anatomy of influenza virus detailed

...luenza virus particles should boost our efforts to prepare for a possible pandemic flu attack," says NIAMS Director Stephen I. Katz, M.D., Ph.D. "This work will allow us to 'know our enemy' much better." One of the difficulties that has hampered structural studies of influenza virus is that no two virus pa...

'Mindless autopilot' drives people to underestimate food decisions

...hings around after a season of mindless eating and prepare for those New Year's resolutions, Wansink offers these research-based tips from his recent book, "Mindless Eating: Why We Eat More Than We Think" (Bantam Books): Use smaller bowls: People who served themselves foods into smaller serving bowls a...

Uniform tungsten trimers stand and deliver

...aboratory, a DOE user facility located at PNNL, to prepare and characterize the platform as well as the clusters. Using a unique approach that changed the tungsten oxide directly from a solid to a gas, the collaborators stabilized the molecular rings ?or "trimers" ?of tungsten on the titanium platform. A s...

First-time analysis reveals millions of Europeans left at risk from influenza

...ents across Europe to address this issue today and prepare for a pandemic tomorrow," concluded Dr Osterhaus. ...

Scientists find mutations that let bird flu adapt to humans

...ls and vaccine manufacturers with precious time to prepare for a global outbreak of highly pathogenic influenza. To be successful, a virus must be able to recognize and attach to a host cell. But human and avian influenza viruses recognize different cell receptors. Avian flu viruses have demonstrated an abi...

First biomarker for human sleepiness identified in fruit flies

...of a car or in other dangerous contexts. "As we prepare for the holiday season and long drives to distant relative's houses, I hope this finding will get people thinking about the dangers and costs of sleep deprivation," says lead author Paul J. Shaw, Ph.D., assistant professor of neurobiology. "If you're...

BC catalyst discovery promises faster, cheaper drug production

...e of this, it is important for anyone who wants to prepare drugs, especially in large quantities, to be able to synthesize single-handed compounds with high selectivity; ideally, none of the opposite hand should be around. This way, the unfavorable properties of one enantiomer are eliminated without diluting...

Transplanted photoreceptor precursor cells restore visual function in mice with retinal degeneration

... Kellogg Eye Center to tag rod precursor cells and prepare them for transplantation The team of scientists found that transplanted photoreceptor precursor cells survived and became integrated into the mouse retina--and that the technique succeeded because the cells were isolated when they had reached a ce...

Cells selectively absorb short nanotubes

...parameters contributing to nanotube toxicity is to prepare well-defined and characterized nanotube samples, as they typically contain a distribution of lengths, diameters, twists and impurities. The team chose to isolate the effects of nanotube length. They first adsorbed short DNA molecules onto the nano...

Ring-around-the-cell

...amble randomly around the cell, but when the cells prepare to dissolve the bone, they make a beeline for the edge. Scientists had been unsure how podosomes were involved in ring formation or, if they did form the ring, whether they somehow fused together or kept their individual shapes. The research team’s f...

Bacterial response to oxidation studied as toxin barometer

...te a sensor,?she said. “The bacteria are easier to prepare and more robust than using mammalian cells, such as rat brain tissue. Brain tissue is the most sensitive to toxins. We wanted to relate the bacteria response to cell response, like a barometer.? “And we saw that it corresponds well,?said Ikuma. “So...

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