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Tag: "filtered" at biology news

Modeling the restless brain

...ider this to be unimportant 'noise' that should be filtered out." Honey and Sporns, associate professor in the Department of Psychological and Brain Sciences, took a close look at the spontaneous activity of the brain at rest. With their computational approach -- which involved creating a large-scale comp...

Marine phytoplankton changes form to protect itself from different predators

...resence of either ciliates or copepods. They then filtered out both the phytoplankton and predators, leaving only water containing the chemical signals of attack. Water samples containing signals from the two predators were then separately introduced into Phaeocystis cultures that had not been attacked. ...

8 plants from South Africa may hold potential for treating high blood pressure

...ution for 48 hours. Each solution was subsequently filtered and the filtrate was left to air dry resulting in the specific test compound. ACE activity was determined using a flourimetric method with Hip-His-Leu as a substrate. The fluorescence of the o-phthaldialdehyde was measured to determine the effect of ...

Transfusion expert urges wider use of filtered blood

...an upfront increase of $25 to $35 for each unit of filtered blood is offset by savings from less use of antibiotics, reduced patient time in the ICU, and shorter lengths of hospital stays overall. One study, in fact, estimated that the savings in treating heart surgery complications alone could total $1 billi...

QUT scientists on the way to sifting out a cure for HIV

HIV may one day be able to be filtered from human blood saving the lives of millions of people, thanks to a world-first innovation by Queensland University of Technology scientists. QUT scientists have developed specially designed ceramic membranes for nanofiltration, which are so advanc...

Discovery of an HIV inhibitor in human blood points to new drug class

...prehensive library of small peptides that had been filtered from the blood of patients with chronic kidney failure during dialysis, in search of those with anti-HIV activity. After sorting the more than one million blood peptides into 300 fractions, they focused on one that blocked HIV without toxic effects o...

Key gene controlling kidney development found

...r become attached to ducts--tubes that collect the filtered blood as urine and direct it to the bladder. The St. Jude team showed that Six2 works by preventing some of the precursor cells from responding to these signals. This ensures there will be a continual source of undifferentiated stem cells available t...

Proteins anchor memories in our brain

...ific T cells will encounter insulin as self and be filtered out." In the thymus, immature T cells display on their surface many thousands of unique receptors, generated by random gene rearrangements. This strategy allows the receptors to recognize the tremendous diversity of invading pathogens. In the pro...

Autoimmune disease triggered if T cells miss a single protein early on

...ific T cells will encounter insulin as self and be filtered out." In the thymus, immature T cells display on their surface many thousands of unique receptors, generated by random gene rearrangements. This strategy allows the receptors to recognize the tremendous diversity of invading pathogens. In the pro...

MIT creates 3-D scaffold for growing stem cells

...nes and nutrients are delivered and waste products filtered away. Cells move within their natural environments in response to chemical signals or other stimuli. Researchers are aware that cells on flat surfaces have skewed metabolisms, gene expression and growing patterns. But the only choices have been gla...

Tiny polyps gorge themselves to survive coral bleaching

...ied with natural seawater. Water from the reef was filtered to remove any plankton and flowed through the tanks in the same way it did through their natural environment. In one set of tanks, the water was heated, mimicking the rising temperatures leading to a bleaching event. After a month, fragments of the...

Researchers show how air pollution can cause heart disease

...eding group breathed doses of either particle-free filtered air or concentrated air containing PM2.5 at levels...athed polluted air fared worse than those inhaling filtered air. But when coupled with a high-fat diet, the impact of PM2.5 exposure was even more dramatic. The...

Purdue's gold nanorods brighten future for medical imaging

...imals' blood, presumably because the rods had been filtered out of the blood by the kidneys. "To be able to detect cells at an early stage of disease such as cancer, it is important to have a reliable technique that has sensitivity at the single-particle level," Wei said. "The gold nanorods demonstrate that ...

Tiny avalanche photodiodes target bioterrorism agents

...olar-blind region; in this region, the UV light is filtered out by the ozone layer providing for a naturally low background signal. Solar-blind APDs are intrinsically able to take advantage of this low background level, while PMTs must use external filters to become solar-blind. This makes secure battlefield ...

Man-made wetland's effectiveness similar to natural marsh

...o for two years concluded that the created wetland filtered and cleaned water as well as or better than would a natural marsh. The wetland, which was built in an agricultural area, reduced levels of phosphorus by nearly 60 percent and nitrates by 40 percent. Phosphorus and nitrates are prime ingredients in b...

Bioartificial kidney under study at MCG

...itional step of having the liquid portion of their filtered blood, called an ultrafiltrate ?which would contain remaining toxins, electrolytes, mediators of inflammation and such ?removed. The liquid is run through the cell-lined fibers of a second cartridge, while the blood is run on the outside of the fiber...

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