News tagged with oxygen species
Algae and bacteria hogged oxygen after ancient mass extinction, researchers say
(PhysOrg.com) -- After the biggest mass extinction in Earth's history -- 250 million years ago -- ocean algae and bacteria rebounded so fast that they consumed virtually all the oxygen in the sea, slowing ...
Space & Earth / Earth Sciences
Mar 25, 2011 |
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Replacing hydrogen in fluorescent dyes improves detection ability, stability and shelf life
By swapping out one specific hydrogen atom for an isotope twice as heavy, researchers have increased the shelf life and detection ability of fluorescent probes that are essential to studying a variety of inflammatory ...
Jul 20, 2010 |
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Scientists discover first multicellular life that doesn't need oxygen
(PhysOrg.com) -- Oxygen may not be the staple of modern complex life that scientists once thought. Until now, the only life forms known to live exclusively in anoxic conditions were viruses, bacteria and Archaea. ...
Apr 07, 2010 |
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New study overturns orthodoxy on how macrophages kill bacteria
For decades, microbiologists assumed that macrophages, immune cells that can engulf and poison bacteria and other pathogens, killed microbes by damaging their DNA. A new study from the University of Illinois ...
Apr 27, 2009 |
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Egg-laying beginning of the end for dinosaurs
Their reproductive strategy spelled the beginning of the end: The fact that dinosaurs laid eggs put them at a considerable disadvantage compared to viviparous mammals. Together with colleagues from the Zoological ...
Other Sciences / Archaeology & Fossils
Apr 17, 2012 |
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Professor's hypothesis may be game changer for evolutionary theory
(PhysOrg.com) -- A new hypothesis posed by a University of Tennessee, Knoxville, associate professor and colleagues could be a game changer in the evolution arena. The hypothesis suggests some species are ...
Apr 04, 2012 |
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New evidence found for the oldest oxygen-breathing life on land
New University of Alberta research shows the first evidence that oxygen-breathing bacteria occupied and thrived on land 100 million years earlier than previously thought.
Space & Earth / Earth Sciences
Oct 19, 2011 |
4.6 / 5 (7) |
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Novel compound selectively kills cancer cells
A cancer cell may seem out of control, growing wildly and breaking all the rules of orderly cell life and death. But amid the seeming chaos there is a balance between a cancer cell's revved-up metabolism and skyrocketing ...
Jul 13, 2011 |
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Certain bacteria render mosquitoes resistant to deadly malaria parasite
cientists have identified a class of naturally occurring bacteria that can strongly inhibit malaria-causing parasites in Anopheles mosquitoes, a finding that could have implications for efforts to control malaria. The study, ...
May 12, 2011 |
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Neural stem cells maintain high levels of reactive oxygen species, study finds
For years, the majority of research on reactive oxygen species (ROS) – ions or very small molecules that include free radicals – has focused on how they damage cell structure and their potential link to stroke, ...
Jan 06, 2011 |
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Nanotechnology: A dead end for plant cells?
Using particles that are 1/100,000 the width of a human hair to deliver drugs to cells or assist plants in fighting off pests may sound like something out of a science fiction movie, but these scenarios may be a common occurrence ...
Nanotechnology / Bio & Medicine
Nov 16, 2010 |
4.5 / 5 (2) |
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Thioketal nanoparticles: Researchers develop oral delivery system to treat inflammatory bowel diseases
(PhysOrg.com) -- Researchers at the Georgia Institute of Technology and Emory University have developed a novel approach for delivering small bits of genetic material into the body to improve the treatment ...
Nanotechnology / Bio & Medicine
Oct 10, 2010 |
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Painless plasma jets could replace dentist's drill
Plasma jets capable of obliterating tooth decay-causing bacteria could be an effective and less painful alternative to the dentist's drill, according to a new study published in the February issue of the Journal of Medical Mi ...
Medicine & Health / Medical research
Jan 19, 2010 |
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Pathogen protection and virulence: Dark side of fungal membrane protein revealed
Researchers at the Virginia Bioinformatics Institute (VBI) at Virginia Tech and Montana State University have discovered a fungal protein that plays a key role in causing disease in plants and animals and which also shields ...
Nov 06, 2009 |
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Researchers show new antioxidant could help treat cardiovascular disease
(PhysOrg.com) -- Researchers at the University of Glasgow believe they have found a potential new treatment for cardiovascular disease which reduces blood pressure.
Medicine & Health / Medical research
Jun 29, 2009 |
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