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Antiprotons 4 times more effective than protons for cell irradiation
10-31-2006 · EurekAlert!A pioneering experiment at CERN with potential future application in cancer therapy has produced its first results. Started in 2003, ACE (Antiproton Cell Experiment) is the first investigation of the biological effects of antiprotons.
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Keywords: antiprotons, times, effective, protons, cell, irradiation, antiproton, time, proton
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- A new look at the proton
09-25-2007 · EurekAlert!
Dutch researcher Paul van der Nat investigated more than three million collisions between electrons and protons. In his PhD thesis he demonstrates -- for the first time -- that the spin contribution of quarks to the proton can be studied by examining collisions in which two particles (hadrons) are produced.
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- Single protein can determine severity of toxoplasma infections
12-20-2006 · EurekAlert!
Now, a team of Stanford University School of Medicine researchers, led by John Boothroyd, PhD, has shown for the first time how toxoplasma manages to be so effective: They documented how it injects a particular protein into the cell it infects and how that protein then travels to the cell's nucleus -- where it blocks the cell's normal response to invasion.
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- Immune cells fighting chronic infections become progressively 'exhausted,' ineffective
10-18-2007 · EurekAlert!
A new study of immune cells battling a chronic viral infection shows that the cells, called T cells, become exhausted by the fight in specific ways, undergoing profound changes that make them progressively less effective over time. The findings also point to interventions that would reverse the changes, suggesting that novel therapies could be developed to reinvigorate T cells that become depleted in their struggle against a virus.
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- Coral stress 'like never in history'
12-12-2006 · EurekAlert!
Large scale coral die-offs are now occurring more frequently than at any time in the last 11 000 years, according to a new study by Australian-based scientists.Investigations by Associate Professor John Pandolfi, of the ARC Centre of Excellence in Coral Reef Studies and the University of Queensland, of fossilized reefs in Papua New Guinea show how often the reefs were "wiped out" by disastrous events in past times.
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- Smoking linked to sleep disturbances
02-04-2008 · EurekAlert!
New research in the journal Chest shows that cigarette smokers are four times as likely as nonsmokers to report feeling unrested after a night's sleep. Smokers also spend less time in deep sleep and more time in light sleep than nonsmokers. Researchers speculate that the stimulating effects of nicotine could cause smokers to experience nicotine withdrawal each night, which may contribute to disturbances in sleep.
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- Researchers develop new method for fighting leukemia
01-16-2007 · EurekAlert!
Researchers at Virginia Commonwealth University's Massey Cancer Center have created a new method to improve the antileukemic activity of a novel agent that triggers programmed cell death, a development that could lead to more effective strategies for fighting leukemia and other malignancies.
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- Study pries into ovarian cancer's deadly secrets
04-11-2007 · EurekAlert!
A new study sheds light on cell defects that lead to one common type of ovarian cancer and puts forth a promising new mouse model that already is being used for preclinical drug testing. The study focuses on ovarian endometrioid adenocarcinoma, the second most common form of a baffling, deadly disease for which early detection methods and effective treatments have been elusive so far.
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- Circulating fats kill transplanted pancreas cells, study shows
08-28-2007 · EurekAlert!
Dietary restrictions or other strategies that limit fat formation might make pancreatic cell transplants more effective, UT Southwestern Medical Center researchers report.
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- Serengeti patrols cut poaching of buffalo, elephants, rhinos
11-23-2006 · EurekAlert!
A technique used since the 1930s to estimate the abundance of fish has shown for the first time that enforcement patrols are effective at reducing poaching of elephants, African buffaloes and black rhinos in the Serengeti National Park in Tanzania.
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- Bare-metal stents are better for some heart patients
05-11-2007 · EurekAlert!
While drug-eluting stents are effective in keeping open diseased heart arteries, they should not be used for patients who need to have noncardiac surgery a short time after an interventional heart procedure. A presentation at the Society for Cardiovascular Angiography and Interventions in Orlando by cardiologists at Jefferson Medical College indicates that for these patients, bare metal stents provide a safer choice.
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