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Growth in the sea comes down to a struggle for iron

...te that iron. It's beginning to look like the same thing may be happening in the ocean," Wells explains. In July, by the time Wells and his colleagues arrived at their appointed location in the northwestern Pacific, the Japanese team had already injected iron into the water and were monitoring the growing ...

Timing is everything: First step in protein building revealed

...e largely as anincorrect timing event -- the wrong thing happening at the wrong time,or the lack of the right thing."As a result, Lorsch studies the timing of how the ribosome complexitself assembles and how other factors come and go as it translatesgenetic information to build proteins, the workhorses of ...

Purdue proves concept of using nano-materials for drug discovery

...eloping synthetic cell membranes to mimic the real thing and then plan to use those membranes to create chips containing up to 1 million test chambers. Each chamber would be covered with a membrane containing the proteins, and the chambers could then be used to search for drugs that deactivate the pumps, L...

Ice core 'dipstick' indicates West Antarctic ice has thinned less than believed

...overed with floating glacier ice. "Then the whole thing spreads out like oil on water," Waddington said. The West Antarctic Ice Sheet once rested on the bottom of the bay all the way to its "grounding line" at the continental margin in the Ross Sea. However, that ice has retreated substantially in the la...

Asthma gene clusters identified

...meone with stable (controlled) asthma. The amazing thing was that the gene expression profiles were consistent across patients, despite the likely differences with respect to the cause of asthma," she said. Asthma is the most common chronic disease of childhood affecting 20 million Americans, according th...

Mayo Clinic Researchers Create 'Obedient Virus'; First Step To Use Measles Virus Against Cancer

...e data, I was completely stunned. It's the sort of thing that, having worked on targeting viruses for about 15 years, I just couldn't believe that we'd finally got what we'd been hunting all that time," says Stephen Russell, M.D., Ph.D., lead researcher and director of Mayo Clinic's Molecular Medicine Prog...

Chemists identify immune system mechanism for methamphetamine binges

..., such as viruses and bacteria, is normally a good thing and forms the basis of modern vaccines, he explain...themselves against the drug, and that's not a good thing as it requires more of the drug to get high," says Janda. His findings were first reported in a rece...

Polymers with copper show promise for implanted sensors

...mples, and they're working on a way to do the same thing in fluid under the surface of the skin. Much work remains to be done, "but the concept of using immobilized copper ions is what we're putting a lot of thought into these days," said Meyerhoff. "It's a speculative idea, but if it works, it will be ve...

Nanoscale Diagnostic Sets Sights on Alzheimer's

... 1 million times more sensitive than the next best thing ?standard enzyme-linked immunoassays (ELISAs). ELISAs do not have the sensitivity required to detect ADDLs in cerebrospinal fluid. BCA could eventually be configured to detect hundreds of diseases simultaneously ?with a single procedure, doctors cou...

Transgenic plants remove more selenium from polluted soil than wild plants, new tests show

...emediation can help clean up the selenium, but the thing that's holding people up from using plants more widely is that, by and large, they work slowly," said Terry. "So what we want to do is take a plant like Indian mustard, because it can grow quickly -- up to six to seven feet tall -- and it is tolerant...

Buying Time Through Hibernation on Demand

... cold-blooded creatures, which is exactly the same thing that happens naturally when mammals hibernate," sa...n a non-hibernating animal," Roth said. "The cool thing about this gas we're using, hydrogen sulfide, is that it isn't something manufactured that we're tak...

U-M team recovers ancient whale in Egyptian desert

... cold-blooded creatures, which is exactly the same thing that happens naturally when mammals hibernate," sa...n a non-hibernating animal," Roth said. "The cool thing about this gas we're using, hydrogen sulfide, is that it isn't something manufactured that we're tak...

Bioelectronic ‘signatures?hold key to DNA mutations

...,?Wang says. “The electronic detection of DNA is a thing of beauty. You can make it small, low-power, inexpensive and robust.?/p> Among the keys to unearthing the mysteries behind individual genetic variation and diseases like cancer are fine differences ?single nucleotide polymorphisms, or “SNPs??buri...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...back a female call, and the male would do the same thing the elephants were doing: He would freeze, then press down on his legs, go forward a little bit, then freeze again. It was just so fascinating to me, and it's what got me to think maybe there's something else going on other than acoustic communicatio...

Cooperation is key—a new way of looking at MicroRNA and how it controls gene expression

...within the nuclei of cells we call our genes. One thing that has become clear in the last several decades, however, is that while our genes contribute to human health and disease, it is not always the genes themselves that matter, but rather how the genes are controlled that makes a difference. The regula...

Road salt affects mitigation wetlands

...fect on the slightly salty one," says Silver. "One thing we would like to see is what happens to bullfrog tadpoles and dragonflies that overwinter in the sediment mud." The researcher would also like to sample the soil where the runoff eventually leaves the wetland to see if salt is building up there. ...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...ntion." The Scourge of Antibiotic Resistance One thing that scientists would like to change about bacteria and cancer cells is their changeability. At the dawn of the 20th century, bacterial infections accounted for several of the leading causes of death in the United States. But then came the antibioti...

Pair of cancer genes found to drive both cell migration and division

...nd his team learned that PTEN and PI3K do the same thing to PIP3 in dividing cells. When a normal cell prepares to divide, it first doubles its genetic material, and then creates a "furrow" down the middle, cutting the cell in half. The research team noticed that the two halves of a normal dividing cell lo...

Life detection instrument passes key test on road to Mars

...such as the "Rock Garden" and the "Soil Pit." One thing they learned is that with low environmental levels of organic compounds, as is likely to be the case on Mars, the microfluidic channels in the capillary disks don't get clogged as readily as they do when used to test samples in Berkeley with its high...

Studies reveal how plague disables immune system, and how to exploit the process to make a vaccine

...s immune system. "Yersinia pestis is the nastiest thing alive," said study author Olaf Schneewind, M.D., Ph.D., professor and chairman of microbiology at the University of Chicago and director of the Great Lakes Regional Center of Excellence in Biodefense and Emerging Infectious Diseases Research (GLRCE)....

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