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Science News for May 18, 2011


New cell therapy to prevent organ rejection

Researchers at King's College London have developed a new approach using immune cells to prevent organ rejection. The 'specific' Tregs can regulate only the activity of effector cells that would target a transplanted organ, leaving the remaining effector cells to function normally.

SourceKing's College London·JournalScience Translational Medicine·DateMay 18, 2011

Young graphite in old rocks challenges the earliest signs of life

Researchers found carbon-based minerals in ancient Canadian rocks to be millions of years younger than the rock itself, questioning earlier timelines for biological life's emergence. The discovery suggests that carbon may have been introduced into the rock at a later stage, potentially altering our understanding of the Earth's evolution.

SourceBoston College·JournalNature Geoscience·DateMay 18, 2011

FIGO's new classification of causes of abnormal uterine bleeding benefits patients

The FIGO PALM-COEIN classification system provides a universally accepted method for classifying abnormal uterine bleeding, facilitating communication among clinicians and researchers. The system categorizes causes of AUB into nine categories, enabling consistent and practical application of medical and surgical therapy.

SourceElsevier Health Sciences·JournalInternational Journal of Gynecology & Obstetrics·DateMay 18, 2011

Virtual workout partners spur better results

Researchers from Michigan State University analyzed the Kohler effect in health video games and found that working out with a virtual partner improves task persistence and reduces social anxiety. The study suggests that incorporating design features based on the Kohler effect could motivate vigorous exercise.

SourceMichigan State University·JournalJournal of Sport and Exercise Psychology·DateMay 18, 2011

Nottingham scientists reveal genetic 'wiring' of seeds

Researchers at the University of Nottingham have discovered a complex genetic mechanism controlling plant germination and flowering. The study reveals genes responsible for stress response are also involved in seed germination, offering insights into adapting crops to extreme environmental conditions.

SourceUniversity of Nottingham·JournalProceedings of the National Academy of Sciences·DateMay 18, 2011

China fossil shows bird, crocodile family trees split earlier than thought

A 247 million-year-old fossil from China has been reclassified as an archosaur, revealing that the bird and crocodile family trees split earlier than previously thought. The discovery provides new evidence for the evolution of archosaurs and sheds light on the origins of these dominant land vertebrates.

SourceUniversity of Washington·JournalEarth and Environmental Science Transactions of the Royal Society of Edinburgh·DateMay 18, 2011

Standing up to fight

A University of Utah study shows that men can hit with far more force when standing upright than when on all fours, giving tall males a fighting advantage. This supports the theory that bipedalism evolved to allow humans to fight with greater strength, and may explain why women prefer tall men.

SourceUniversity of Utah·JournalPLOS ONE·DateMay 18, 2011

Gambling problem exposed as access grows

A new study by University of Calgary researcher Dr. David Hodgins highlights the growing issue of problem gambling as access to online gambling increases. Problem gamblers often co-occur with other mental health and substance-abuse disorders, and treatment effectiveness is variable.

SourceUniversity of Calgary·JournalThe Lancet·DateMay 18, 2011

The odds are against ESP

A new study by Rouder and Morey applies a statistical method to Dr. Bem's ESP experiments, finding modest evidence that doesn't support claims of extra-sensory perception. The researchers conclude that the odds are against ESP existing, given the current scientific knowledge.

SourceSpringer·JournalPsychonomic Bulletin & Review·DateMay 18, 2011

Columbia researchers work to prevent blindness from age-related macular degeneration

Researchers at Columbia University Medical Center have discovered a modified form of vitamin A that slows the formation of detrimental dimers, leading to improved vision and ocular health in mice with Stargardt's disease. The study provides hope for treating age-related macular degeneration and Stargardt's disease.

SourceColumbia University Irving Medical Center·JournalJournal of Biological Chemistry·DateMay 18, 2011