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Tag: "long" at biology news

Innovative coating could give medical implants a longer life

...e shown to be effective at antifouling do not last long in-vivo, falling prey to chemical degradation or t...and prevents cell and protein buildup, works for a long period of time. In laboratory studies, the new coating provided effective fouling resistance for mor...

Atmosphere may cleanse itself better than previously thought

...armful components. While many such chemicals have long been known to behave in this way ?producing natura...ituents, and the effect they have on pollution has long been factored into models that describe the atmosphere and attempt to predict how it will react to i...

Disabling gene defuses rheumatoid arthritis in mice

...formity and instability. Rheumatoid arthritis has long been recognized as a condition that involves defensive cells from the body's immune system mistakenly attacking healthy joint tissues. Scientists once thought the cells that were most active in these attacks were adaptive immune cells including T cel...

Researchers Identify Cause of Early Bird Sleep Disorder

...ans that altering a single base-pair in the gene's long DNA chain is enough to change a person's sleep behavior. Evidence from tissue culture experiments with the second gene suggests the change causes a protein -- an enzyme called a kinase that is made by the gene - to be less active than normal. The le...

Searching the depths of the straits of Florida for disease cures

...mini before heading for the bank. This makes for a long trip that deters most. Divers who do make the journey are fond of Cay Sal because of its spectacular reefs, extensive cave systems, and abundant sea life, including the elusive whale shark. Harbor Branch scientists are attracted most to its steep to...

Shark attack worries? Driving to the beach is more deadly

...harks." McEachran says some common sense can go a long way in avoiding contact with sharks. "Sharks generally don't like to be around people," he adds. "Most people are safe at the beach. To put your mind at ease, go to a beach that has lifeguards. They should be looking for possible sharks. "Shark at...

New HIV drug candidate developed in Sweden

...harks." McEachran says some common sense can go a long way in avoiding contact with sharks. "Sharks generally don't like to be around people," he adds. "Most people are safe at the beach. To put your mind at ease, go to a beach that has lifeguards. They should be looking for possible sharks. "Shark at...

Leprosy genome tells story of human migrations, French researchers report in Science

...h a combination of antibiotics. The bacterium has long puzzled researchers because its genome is filled with an unusually high proportion of damaged, nonfunctional genes. This is probably why it grows exceedingly slowly, making it difficult for researchers to study because they can't grow it in culture. ...

Agilent Technologies introduces advanced zebrafish, mouse microarrays for stem cell and developmental biology research

...harks." McEachran says some common sense can go a long way in avoiding contact with sharks. "Sharks generally don't like to be around people," he adds. "Most people are safe at the beach. To put your mind at ease, go to a beach that has lifeguards. They should be looking for possible sharks. "Shark at...

Tsunami-damaged coral reefs should be left to recover naturally, say scientists

...f years, and they have survived and adapted over a long time." Poorly planned reconstruction programmes undertaken on the land can also adversely affect marine wildlife, say the scientists. Professional environmental impact assessments should be carried out in the first instance so that projects can be u...

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

...hips with fungi in the marine environment, perhaps long before the evolution of land plants?" Present-day...ationship between fungi and algae may have evolved long before the colonization of land by land-based lichens and green plants, which also form symbiotic re...

Mice brains shrink during winter, impairing some learning and memory

...he beginning of the study. Other mice were kept in long days, simulating summer, with 16 hours of daylight...They were tested for several days to determine how long it would take them to find the platform, and whether they remembered where the platform was from day...

Tamoxifen-like drug suggests new ways to selectively block estrogen

...ut significant, change in conformation that goes a long way towards explaining why these drugs have different effects in different tissues," said Geoffrey Greene, Ph.D., professor in the Ben May Institute for Cancer Research at the University of Chicago. "This type of information should help us design dr...

Hopkins AIDS experts issue warning about global efforts to provide drug therapies

... prevent the spread of HIV/AIDS are to work in the long term, they must avoid public suspicions of being unfair, and they must build public trust for the future," she adds. "HIV-positive people in each country affected must be involved in deciding how limited therapies are rationed, and these decisions c...

Researchers reveal secrets of flying snakes

... Exploration. Most flying snakes grow 3 to 4 feet long and live in the trees in the lowland tropical rain.... These back teeth measure only 2 to 3 millimeters long and each has a small groove that runs along the fang's outer edge, where the venom drips down and in...

The first impact factor for PLoS Biology ?13.9

...en taken toward these goals. But there is still a long way to go before the mission of the Public Library of Science ?to make the world's treasury of scientific and medical literature a public resource ?is fulfilled. We hope that PLoS Biology's first impact factor will inspire even greater support for PL...

Discovery of New Dopamine Action May Yield Alternative Psychiatric Drugs

... fact, it may be that this effect continues for as long as dopamine remains in the system." This sustained action of dopamine may be particularly important for understanding psychiatric conditions, which are characterized by persistently high levels of the brain messenger, Beaulieu said. The researchers ...

Map of life on Earth could be used on Mars

...ments. My point is that it could have taken a very long time for them to come back and to form even more complex ecosystems. So the literal interpretation of these patterns is that early habitat specialization could have lasted for a billion years." After mapping early habitat divergences onto the tree, ...

Malaria mechanism revealed

...oined my lab as a graduate student, it didn't take long for me to convince him that this was a good project," says structural biologist Leemor Joshua-Tor of Cold Spring Harbor Laboratory, who led the research. A major pathway through which malaria parasites invade red blood cells is the binding of a prot...

Random gene expression may drive HIV into hiding

... replicating and becomes dormant. Researchers have long puzzled over how HIV makes the "decision" to become latent or to keep replicating in a certain cell. "Most of the other groups studying the molecular mechanisms of HIV latency were coming at it from a deterministic point of view based on the belief ...

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