Tag: "replace" at biology news

Fox Chase Cancer Center's Alfred Knudson Jr. named 2004 Kyoto Prize winner

...s growth, so devising ways to remedy such flaws or replace the gene's missing product through medication are of interest to researchers. The Inamori Foundation was established in 1984 by Kazuo Inamori, founder and chairman emeritus of Kyocera Corporation. The Kyoto Prizes were founded in 1985 in line with I...

Tiny tango: Device sorts microscopic particles with speed and precision

...any areas of biological research and could largely replace some centrifuge devices that are commonly used to separate cells and molecules based on mass, according to Cox. A primary use could be in sorting segments of DNA according to their length, which is a key step in genome sequencing efforts. Another use...

Loyola decides to test new blood substitute in trauma patients at the scene of injury

...ince the introduction of saline, or salt water, to replace volume after blood loss, around the time of World War I," said Dr. Richard L. Gamelli, principal investigator, chair of the Department of Surgery and professor of trauma surgery, Loyola University Chicago Stritch School of Medicine. The community o...

Nanoparticles illuminate brain tumors for days under MRI

... believe iron oxide nanoparticles will necessarily replace gadolinium as an imaging tool. "It will complement gadolinium, but not replace it," he said. "Gadolinium is the gold standard. But ferumoxtran-10 gives us additional information w...

Researchers identify gene linked to sperm-producing stem cells in mammals

...ism, including adult stem cells, which continually replace cells in the adult tissues that die or differentiate into more mature cells like red blood cells. In the adult testicles, the germ stem cells can produce more germ stem cells, but can also produce daughter cells that go on to become sperm. But resear...

Embryonic stem cell - based tissue engineering may help repair damaged heart muscle

...ing, according to Dr. Kofidis: the cells that will replace the dead cells and regenerate the organ, and the supporting framework that will distribute the cells evenly and maintain the 3-D shape necessary for proper functioning of the organ. "We have been working for a long time on developing the ideal scaff...

Fat cells heal skull defects in mice, Stanford research shows

...dified cells as building blocks to heal fractures, replace joints, treat osteoporosis or correct defects in b...s," said Longaker. "The non-human tissue we use to replace joints may last 10 to 20 years if it's well integrated. Our hope is that we could do better by repla...

When plants need ants' help, bigger is better

...s are larger than invasive ants." As invasive ants replace the native species, the average size of seed-moving ants declines. The change in the ant community can influence the plant community. Ness and his colleagues examined 57 ant species from 24 sites across six continents and found that just a small incr...

BioTime awarded NIH grant to aid Hetacool development

...ng red blood cells, while HetaCool will be used to replace the circulating blood to prevent the blockage of small blood vessels caused by the "sludging" of blood at low temperatures. During surgical procedures for the treatment of certain cardiovascular conditions such as large aneurysms, cardiovascular abno...

Bye-bye Bio 101: Teach science the way you do science

...e at its best. If scientific teaching is going to replace lectures and "cookbook" labs in which the results are already known, the policy paper says that research universities and scientists must lead the way. The authors recommend: Revamping introductory lecture courses to include active participation by...

Prenatal nicotine primes adolescent brain for addiction

...teens to self-administer nicotine in an attempt to replace the brain's functional loss. Furthermore, that deficient brain response might drive higher cigarette consumption. Collaborators on the studies include Yael Abreu-Villaca, Ph.D., Frederic Seidler, Ph.D., Charlotte Tate and Mandy Cousins, all of Duke....

DELTA mission heading to ISS with Dutch ESA astronaut

... Winne from Belgium on board. The Soyuz TMA-4 will replace the Soyuz TMA-3, which flew ESA astronaut Pedro Duque to the ISS on the Cervantes mission in October 2003. The Soyuz TMA-4 will remain docked with the ISS for approximately six months as an emergency lifeboat. Andr Kuipers becomes the seventh Euro...

Keck Futures Initiative announces grant recipients

...ng regions of sensory cortex. He will endeavor to replace the current unrealistic assumption that all post-synaptic potentials (PSP) are quenched between successive time slots with a neuroscientifically more accurate one to the effect that a neuron's PSP gets fully quenched only if it just generated an acti...

Story tips from the Department of Energy's Oak Ridge National Laboratory, April 2004

...e National Laboratory. Electric drive motors could replace the belts that run compressors, water pumps and oil pumps of hybrid and fuel cell vehicles. The motors, however, require inverters, and ORNL's Gui-Jia Su, John Hsu and Cliff White are developing an integrated inverter that would work with multiple mo...

Best way to clean up toxic plumes? Give 'em a pill

...ve the site alone for a year or two and eventually replace the chunks if necessary." Potassium permanganate essentially eats away at TCE and PCE, turning these solvents into harmless minerals, water and carbon dioxide. It's also cheap and plentiful. "Potassium permanganate is a much cheaper and much more cos...

Frog skin and supercomputers lead Penn chemists to designing better bacteria killers

...n Anaheim, Calif. "Our original approach was to replace the peptide backbone found in magainin with one of arylamide, which is relatively easy to create in the lab," Doerksen said. "Like magainin, the modified arylamide polymer can disrupt the cell membranes of bacteria without harming the membranes of o...

Genetic profile, not clinical appearance, to determine tumor treatment

...roblems. These include gene-mediated strategies to replace defective sequences, blocking signal transduction, and anti-angiogenic agents. Early clinical trials show promise. However, targeting residual tumor and precancerous lesions is not straightforward, and strategies to improve delivery of these novel th...

Breaking the rules on artifical blood

...lose blood, they are initially given salt water to replace the lost volume. But too much saline thins the blood, leading to vasoconstriction. Intaglietta's team has shown that if animals are given a "plasma expander" that has a higher viscosity than saline, their capillaries stay open. Animals given this ex...

Research suggests new way to repair cartilage damage

...ething that needs to happen as new tissue grows to replace it, Setton said. Calling the work a promising proof of concept, Setton said there is much work still to be done. Setton is working with Dana Nettles to optimize the properties that will make the hyaluronan polymer treatment most effective. For examp...

Watching genes in action

... should help scientists "use tissue engineering to replace function that has been lost because of abnormal development or disease. By understanding in detail how the embryo develops, we hope to mimic the process with tissue engineering to make new kidneys, for example." How the New Method Works ...

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