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Ice Age extinction claimed highly carnivorous Alaskan wolves

...en. The researchers extracted mitochondrial DNA from the fossil wolf bones preserved in permafrost and ...onard said. The ancient Alaskan wolves differed from modern wolves not only in their genes, but also in their skulls and teeth, which were robust and mor...

AAAS decries latest stem cell veto

... stem cells, which proponents say would be derived from microscopic embryos left over and due to be discarded after in vitro fertility treatments. Current U.S. policy limits such funding to fewer than 20 stem cell lines that had been created when the president first announced U.S. policy in 2001. "Our ...

Smoking rate has plummeted in New York City

...nt 80,000 premature deaths this quickly.” Ads from the 2006 campaign graphically depicted tobacco smo...he brain, lungs and arteries, showing testimonials from sick and dying smokers and their children, including former smoker Ronaldo Martinez, who now breaths...

Antarctic icebergs -- Hotspots of ocean life

...plex ways, this additional role of removing carbon from the atmosphere may have implications for global cl...and to answer questions across the different areas from ecology to chemistry and climate, scientists need access to all the data,” explained researcher John...

Putting feelings into words produces therapeutic effects in the brain

...opular in Southeast Asia and elsewhere, originates from early Buddhist teachings dating back some 2,500 years, said David Creswell, a research scientist with the Cousins Center for Psychoneuroimmunology at the Semel Institute for Neuroscience and Human Behavior at UCLA. Mindfulness is a technique in w...

Modified mushrooms may yield human drugs

...ene to help sort out the transgenic mushroom cells from the non-transgenic cells, Dr. Romaine explained. ...room, and camouflaging it with regulatory elements from a mushroom gene. We then patch these genetic elements in the plasmid and insert it back into the bac...

New vaccine prevents CMV infection and disease in mice

...ach generates an immune response that is different from the normal response to the virus, and we hope to h...cause the host’s natural immune system can protect from the disease but can’t rid the body of the virus, people remain infected and can become re-infected o...

St. Jude study shows genes play an unexpected role in their own activation

...ers gene activity that might cause effects ranging from learning and memory capabilities to glucose produc... each gene determines which set of co-factor tools from CREB’s toolbox it will respond to.” In order to activate a gene, CREB must first get “tagged” by...

Understanding why C. difficile causes disease -- it's hungry

...ugs. Then, C. difficile can cause symptoms ranging from diarrhea to life-threatening inflammations of the ...erest to Sonenshein and his colleague, Bruno Dupuy from the Institut Pasteur. One codes for a protein, known as R, that is necessary for the expression of t...

Definitive evidence found of a swimming dinosaur

...abundance of terrestrial dinosaur trackways dating from the early Cretaceous 125 million years ago. The team's findings are reported in the June issue of GEOLOGY, published by the Geological Society of America. The trackway consists of 6 asymmetrical pairs of 2-3 scratch marks each. Each set of scratch...

A first -- Hebrew University scientist observes brain cell development in 'real time'

...dels to study how neurons, or nerve cells, develop from an undifferentiated cellular sphere into a rich and complex cell. This has great significance for the future of brain research, said Dr. Mizrahi, since "the structural and functional complexity of nerve cells remains one of the biggest mysteries of n...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...that they have engineered adult stem cells derived from human umbilical cord blood to produce insulin. Th...s us that we have the potential to produce insulin from adult stem cells to help people with diabetes," said Dr. Randall J. Urban, senior author of the pape...

Experimental gene therapy 'abolishes' arthritis pain and lessens joint damage

...xt year. Nearly everyone aged 65 or older suffers from the pain, swelling and permanent joint damage of o... the CNS. Joining Kyrkanides in the publication from the University of Rochester School of Medicine and Dentistry were co-authors J. Edward Puzas, Ph.D.,...

Genome of Clostridium botulinum reveals the background to world's deadliest toxin

...ted Dr Mohammed Sebaihia, lead author on the paper from the Wellcome Trust Sanger Institute. "Unlike Cdiff... more than 10 per cent of genes have been acquired from other bacteria, there is almost no footprint of these in C. botulinum." There are several types o...

'Smart' mice teach scientists about learning process, brain disorders

...-term effects of deleting the enzyme, called Cdk5, from the brain are continuing. The group is also beg... The new research showed that when Cdk5 is removed from the brain, the levels of NR2B significantly increase, and the mice are primed to learn, Dr. Bibb sai...

Skimmed milk -- Straight from the cow

...uired to make a butter that is spreadable straight from the fridge. They have already identified a cow, Ma...dairy firm Fonterra has already made milk products from Marge’s milk and they maintain the positive taste....

Ants show us how to make super-highways

... This study provides rare quantitative evidence from animal societies that extreme specialisation by a minority can significantly improve the performance of a majority to benefit the group as a whole. It also suggests that these benefits are a consequence of the unusual and derived foraging strategy of...

'Virtual autopsy' helps identify drowning as cause of death

... of death," said lead author Angela D. Levy, M.D., from the Department of Radiology, Uniformed Services Un...l group of 12 men who were victims of sudden death from coronary artery disease. Following MDCT, routine autopsies were performed. MDCT images were evalu...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

...ver before launching HIV care programs, say a team from Médecins Sans Frontières (MSF) in this week’s PLoS...nd colleagues' paper includes powerful testimonies from patients who have been under the care of MSF. One patient, followed in the clinic since May 2003, a...

Researchers use MRI to predict recovery after spinal cord injury

... may predict which patients would benefit the most from decompressive surgery," Dr. Fehlings said. He added that MRI should be performed on all patients with acute SCI whenever feasible as it provides information with prognostic value and serves to guide the clinician to optimize clinical care....

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