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Tag: "across" at biology news

Genomic Analysis Uncovers New Targets for HIV Vaccine

... CHAVI studies should help individual laboratories across the world perform research to better understand the virus." When someone becomes infected with HIV, the amount of virus in the blood spikes as the virus multiplies. After this peak, the amount of virus in the blood, known as the viral load, graduall...

Cellular message movement captured on video

...e culture, and filmed them while they passed fluid across the cells’ surface in a simulation of flowing blood. With that physical stimulus, paxillin consistently moved in the same direction as the fluid flow. Paxillin is found primarily at focal adhesions, busy intersections of activity scattered around ...

Simulations unravel outer membrane transport mechanism

...eins involved in the active transport of materials across cell membranes. Their study, which includes a col... vitamin B12, citric acid or other vital nutrients across the outer membranes of Gram-negative bacteria is not a simple task. The cells must be selective in w...

CSIRO scientists join fight to save 'Tassie devil'

...e spatial and temporal distribution of the disease across Tasmania. “The result of my work was a map showing the spread of DFTD over time and some spatial statistics correlating the frequency of devils and diseased individuals with different landscapes or land uses,” Mr Marvanek said. Dr Hyatt said h...

Largest synthetic gene ever built offers insights into anti-malarial drug resistance

... "We know these mutant proteins are controlling pH across two different membranes, but we don't yet know exactly how they are doing it," Roepe says. "Still, knowing the pH values can help pharmacologists and chemists redesign a molecule to take advantage of these changes."...

Caribbean frogs started with a single, ancient voyage on a raft from South America

...ican, Hispaniola, and Puerto Rico had walked there across land bridges that existed when those islands were ...ry proposed that they arrived, instead, by rafting across the Caribbean Sea after the giant asteroid impact near Cuba 65-million years ago, which is widely be...

New collaborative research reveals chimpanzees can sustain multiple-tradition cultures

...ave suggested different communities of chimpanzees across Africa vary in many behavior patterns, indicating they have cultures specific to each community. In the wild, however, it is difficult to prove behaviors are passed on by observation and learning. In this study, members of the international colla...

Dual-imaging technique useful before -- and during -- brain surgery

...dual-imaging technique to become standard practice across the United States in the next five years, there are still limitations. For example, explains Leach, patients with limited vision may not demonstrate as much activity in the brain in areas linked to vision during functional MRI testing. “That does...

Australian wins prestigious prize in biodiversity informatics

...ware tools into web-based tools that can be shared across the Internet. Sharing analytical software in this way promotes collaboration and cooperation among scientists and between scientists and policy-making agencies. Flemons understands the importance of the interplay between natural history collecti...

The kapok connection -- Study explains rainforest similarities

...he continents split when the trees' seeds traveled across the ocean. The findings, funded by the National Science Foundation (NSF), appear online this week in the journal Molecular Ecology. "This research provides vital information for one of the most highly threatened areas of the planet, tropical ra...

Blood-brain barrier breached by new therapeutic strategy

...ies peptide can be used to deliver antiviral siRNA across the blood-brain barrier and into nerve cells in th...vasive method for delivering therapeutic molecules across the blood-brain barrier. It has the potential to be applied to the treatment of a variety of brain i...

Helping chlorine-eating bacteria clean up toxic waste

...els, and we can highlight features that are common across several models," she said. "As we develop the model, we can begin to look at the genomes of other strains of Dehalococcoides. If genes that are important in our strain are found in others ... then we can do the same experiments with the others." Find...

Male circumcision overstated as prevention tool against AIDS

...bott, has conducted statistical empirical research across 77 countries of the world and has uncovered some s...in explaining the variance in AIDS infection rates across the countries of the World. Second, to date, there has not been an adequate explanation as to why...

Scientists close in on missing carbon sink

...ed air samples that had been collected by aircraft across the globe for decades but never before synthesized. The team found that some 40 percent of the carbon dioxide assumed to be absorbed by northern forests is instead taken up in the tropics. "Our study will provide researchers with a much better und...

Antarctic icebergs -- Hotspots of ocean life

...ng islands of ice – some as large as a dozen miles across – are having a major impact on the ecology of the ...than the sum of the parts, and to answer questions across the different areas from ecology to chemistry and climate, scientists need access to all the data,” ...

Skimmed milk -- Straight from the cow

... ViaLactia screened the range of milk compositions across the entire herd of 4m New Zealand cattle. New Zealand dairy firm Fonterra has already made milk products from Marge’s milk and they maintain the positive taste....

Ants show us how to make super-highways

... has ever inwardly cursed as their vehicle bounced across a pothole – jarring every bone in their body – will identify with this story. When it comes to rapid road repairs, the ants have their own do-it-yourself highways agency." "When the traffic has passed, the down-trodden ants climb out of the potho...

Avian influenza survivors' antibodies effective at neutralising H5N1 strain

...as caused disease and death in millions of poultry across the globe and occasionally has been transmitted to humans, often fatally. By mid-May 2007, according to the World Health Organization, there had been 306 known cases in humans, 185 of them fatal. Now, doctors based at the Hospital for Tropical Di...

First confirmed common genetic risk factors for breast cancer

...iously identified risk genes on disease prevalence across a large population of women. However, Dr. Liu pointed out, breast cancer susceptibility is conferred by a large number of genetic loci, each with a small effect on breast cancer risk. "Breast cancer likely involves many risk genes, and each gene o...

An 'elegant' idea proves its worth 25 years later

...on to use the drugs. "In all my years I never came across another disease where patients come in near-comatose and you stick a needle in them and lo and behold, they wake up—just like that. It was just astonishing," he says. "His elegant idea was to give patients chemicals they already make in small amo...

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