ScienceDaily Top Science Headlines
for Sunday, December 27, 2009
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Exposure to young triggers new neuron creation in females exhibiting maternal behavior (December 27, 2009) -- Maternal behavior itself can trigger the development of new neurons in the maternal brain independent of whether the female was pregnant or has nursed, according to a new study. The study was performed in adult, virgin rats. ... > full story
Physician urges changes in diagnosis for sore throat in young adults (December 27, 2009) -- New analysis suggests that physicians need to re-think their diagnosis and treatment of sore throat, or pharyngitis, in adolescents and young adults to consider a more newly identified and potentially dangerous culprit as the source of that infection. ... > full story
New clues emerge for understanding morphine addiction (December 27, 2009) -- Scientists are adding additional brush strokes to the revolutionary new image now emerging for star-shaped cells called astrocytes in the brain and spinal cord. Their report suggests a key role for astrocytes in morphine's ability to relieve pain and cause addiction. ... > full story
Researchers find evidence of survival gains in bone marrow disease (December 27, 2009) -- Scientists demonstrate new survival data for the blood disorder myelofibrosis. This retrospective study is the largest ever conducted in young patients with primary myelofibrosis. ... > full story
Flowering powers genetic understanding (December 27, 2009) -- New research on how plants adapt their flowering to climate is also helping to unravel some of the mysteries of how genes are controlled. Studies on a gene in Arabidopsis that controls flowering time are providing potential roles for non-coding RNA. ... > full story
Iranian Scholars Share Avicenna's Medieval Medical Wisdom (December 27, 2009) -- For pulmonary ailments, certain medieval physicians had a useful medical textbook on hand offering detailed information remarkably similar to those a modern doctor might use today. ... > full story
Vampires and collisions rejuvenate stars (December 26, 2009) -- Using the NASA/ESA Hubble Space Telescope, astronomers have uncovered two distinct kinds of "rejuvenated" stars in the globular cluster Messier 30. A new study shows that both stellar collisions and a process sometimes called vampirism are behind this cosmic "face lift." The scientists also uncover evidence that both sorts of blue stragglers were produced during a critical dynamical event (known as "core collapse") that occurred in Messier 30 a few billion years ago. ... > full story
Further progress toward AIDS vaccine: Rabies-virus vaccine protects monkeys (December 26, 2009) -- Researchers are one step closer to developing a vaccine against the AIDS disease. They have found that a rabies virus-based vaccine administered to monkeys protected against the simian equivalent of the HIV virus (SIV). ... > full story
How the daisy got its spot: Insect mimicry (December 26, 2009) -- Dark spots on flower petals are common across many angiosperm plant families and occur on flowers such as some lilies, orchids, and daisies. Much research has been done on the physiological and behavioral mechanisms for how these spots attract pollinators. But have you ever wondered what these spots are composed of, how they develop, or how they only appear on some but not all of the ray florets? ... > full story
Physical activity associated with lower risk of mortality in men with history of colon cancer (December 26, 2009) -- Increased physical activity appears to be associated with a lower risk of cancer-specific and overall death in men with a history of colorectal cancer that has not spread to other parts of the body, according to a new study. ... > full story
Magnetic field measurements of the human heart at room temperature (December 26, 2009) -- A new optical sensor was successfully tested in the "magnetically best shielded room on Earth." The sensor does not need advanced cooling and is very small. Its suitability was proven for biomagnetic measurements in the picotesla range. So, magnetocardiographic measurement devices -- to be used as a supplement or an alternative to the ECG -- could become simpler and less expensive. ... > full story
Calorie restriction: Scientists take important step toward 'fountain of youth' (December 26, 2009) -- Going back for a second dessert after your holiday meal might not be the best strategy for living a long, cancer-free life say researchers. That's because they've shown exactly how restricted calorie diets -- specifically in the form of restricted glucose -- help human cells live longer. ... > full story
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