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Mercury contamination of fish warrants worldwide public warning

...es presented in the five supporting papers clearly show that effective national and international policies are needed to combat this global problem." Published by the Royal Swedish Academy of Sciences, Ambio ( www.ambio.kva.se ) is widely recognized as an important international forum for debate on scien...

Discovery could lead to better control of hemorrhagic fever viruses

...ver viruses enter and attack the body's cells, and show that infection can be inhibited by blocking this receptor. The findings, to be published online by the journal Nature on February 7, give a clue to the high lethality of New World arenaviruses, suggest a way of reducing the severity of infection, and...

Bacterial walls come tumbling down

...perbug. The images produced by Strynadka's team show the enzyme frozen in place by a powerful antibiotic called moenomycin. Moenomycin has been used for decades in animal feed to promote livestock growth. Bacteria have shown very little evidence of resistance to this antibiotic so far, and scientists t...

How fish species suffer as a result of warmer waters

... Investigations at the Alfred Wegener Institute show the key importance of oxygen uptake and distribution ?through respiration and blood circulation ?in setting the animals' thermal tolerance range, in that these processes are optimised to only a limited temperature window. With increasing temperature,...

Researchers find gene mutation that causes infertility in male mice

... to future generations. However, female carriers show higher rates of abnormalities during meiosis, which can potentially cause chromosome imbalances and birth defects, the researchers discovered. In addition, the researchers found that female mice with the Dmc1 mutation are born with fewer egg cells an...

Cold sore virus might play role in Alzheimer's disease

...roup at the University of Rochester Medical Center show that the particular form of the gene that puts people at risk also creates a fertile environment for herpes in the brain, allowing the virus to be more active than other forms of the ApoE gene permit. Scientists have known for more than 15 years t...

Gene elevating breast cancer risk also causes prostate cancer

...sk of breast cancer four-fold "Present results show that the discovered PALB2 mutation elevates the risk of breast cancer four-fold. However, we still need more research to better assess the effect on cancer development. As the comprehensive mutation analysis was originally conducted on only 113 cance...

Antifungal drug kills TB bug

...structure," said Professor Munro. "We were able to show in laboratory experiments that various types of these azole drugs were also very good at killing the TB bacterium, and also that they bind very tightly to a number of the TB P450 enzymes that we have isolated ?inactivating their function." ...

Wired for sound: How the brain senses visual illusions

...et of new findings by scientists in the field that show how integration of multiple sensations can happen ...rapidly than we thought before," said Mishra. "We show physiological evidence that visual and auditory stimulation might not be processed separately, then ...

New protein inhibitor impedes growth of cancerous cells

...ey roles in the control of cell division, and they show that the inhibitor can halt the growth of tumors i... demonstrate to be a potent inhibitor of Plk1, and show that BI 2536 can indeed effectively halt the growth of cancerous cells, both in cell culture and in ...

Study shows hope for early diagnosis of Alzheimer's

...xhibit that peak much later than 300 milliseconds, show a much weaker peak or have no peak at all, according to Polikar. Kounios said the P300 signal is generated by areas of the brain that seem to be attacked at an early phase of Alzheimer’s disease, but the results are not always conclusive. Polikar ...

Saving endangered whales at no cost

...graphic evidence indicates that 75% of individuals show signs of entanglement, mostly from lobster fishing gear. In the new work, the researchers analyzed the costs and benefits of two dramatically different lobster fishing strategies currently employed in the Gulf of Maine, the world's most important...

Keeping the body in sync -- The stability of cellular clocks

... study in Switzerland uses the tools of physics to show how our circadian clocks manage to keep accurate time in the noisy cellular environment. In an article appearing March 13 in the journal Molecular Systems Biology, researchers from the Ecole Polytechnique Federale de Lausanne demonstrate that the s...

Scientists find method to pick noncompetitive animals, improve production

...oductivity. In the latest research, the scientists show that aggressiveness and all other traits affecting social interactions are inherited and can be estimated. They also found that by using the new tool they were able to confirm two-thirds more inherited trait variations that impact social interactions...

University of Alberta researchers unravel intricate animal patterns

...to groups, says Lewis. "What Raluca's work does is show that very simple and straightforward sets of rules can produce the complex kinds of patterns seen in nature," says Lewis, also from the Department of Biological Sciences. "Her work has stripped out the unnecessary detail to the core elements of commu...

Darwin's famous finches and Venter's marine microbes

...terns of sequence conservation, Kannan was able to show that loss of one key residue could be compensated by changes around other conserved regions of the protein, and that some of these changes in bacterial kinases are also seen in specific human kinases. Says Manning, "By looking at all these very di...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

...ave stem-cell-like properties. Thus, their results show that manipulating epigenetic information in this protein in early mouse embryos can influence cell fate determination ...

New findings blow a decade of assumptions out of the water

...e two processes, for instance. The new findings show the processes are happening within a few hundred miles of each other so the balance could be reached within a decade, the authors estimate. Deutsch compares the old assumption to a house where the thermostat is many rooms away from a window that has...

Migration played key role in HIV spread in South Africa

...sages. The study's physiologic data failed to show an association between long-term marijuana smoking and airflow obstruction (emphysema). However, all 14 studies that assessed long-term marijuana smoking and respiratory complications noted an association with increased respiratory symptoms, suggesti...

Long-term marijuana smoking leads to respiratory complaints

...sages. The study's physiologic data failed to show an association between long-term marijuana smoking and airflow obstruction (emphysema). However, all 14 studies that assessed long-term marijuana smoking and respiratory complications noted an association with increased respiratory symptoms, suggesti...

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