Scientists at Johns Hopkins have developed a mouse model for schizophrenia in which a mutated gene linked to schizophrenia can be turned on or off at will. The researchers developed the transgenic…

Infants and children receiving artificial heart-valve replacements face several repeat operations as they grow, since the replacements become too small and must be traded for bigger ones.…

Enzymes are proteins that act as catalysts in everything from single-celled organisms to humans. They promote chemical reactions in cells and are used widely in industry for everything from making…

If you look at a price and you see larger numbers on the far right, it makes a difference in how you perceive the discount compared to small numbers on the right even if the actual differences are…

For the past six weeks, parents have been able to keep a watchful eye over what they are feeding their children at mealtimes. However, with the back-to-school season fast approaching, most parents…

The tunic believed to have been worn by Saint Francis of Assisi preserved in the Church of Saint Francis in Cortona (Province of Arezzo) dates back to the period in which the saint lived, whereas the…

Autism spectrum disorders cover a wide span of conditions and symptoms, from severe mental retardation to mild social impairment. In general, people with autism have problems with social interactions…

The release of sulfur and nitrogen into the atmosphere by power plants and agricultural activities--commonly referred to as acid rain--plays a minor role in making the ocean more acidic on a global…

There has been a lot of recent discussion about recovery from depression, sparked by the results of the largest ever treatment trial (STAR*D) and its indicator that more and new combinations of…

Studies with rats have revealed the potential in an entirely new class of antidepressants that take effect after only days of treatment versus the weeks required for current drugs. The researchers,…

Airline passengers and crews who gripe about poor cabin air quality could have a new culprit to blame: the oils on their skin, hair and clothing. A new study suggests interactions between body oils…

In experiments with mice, Lennart Mucke and colleagues have discovered a mechanism by which the toxic brain protein produced in Alzheimer’s disease (AD) could contribute to the cognitive deficits…

Scientists at MIT’s Department of Civil and Environmental Engineering and the Technion Israel Institute of Technology have for the first time recorded the entire genomic expression of both a host…

In work that could lead to safe and effective techniques for gene therapy, MIT researchers have found a way to fine-tune the ability of biodegradable polymers to deliver genes. Gene therapy, which…

Prions – an abbreviation for proteinaceous infectious particles – work as a trigger to a set of diseases of the brain and nervous system, the so-called spongiform encephalopathies. These include BSE…

Gene therapy, a field of intense research for nearly 20 years, involves inserting new genes into patients' cells to fight diseases like cancer. It holds great promise but has yet to realize its full…

The standard approach in biology is to focus on identifying individual genes and proteins and pinpointing their role in the cell or the human body. But molecules almost never act alone. According to…

Weather forecasting and climate modelling for the notoriously unpredictable Sahel region of Africa could be made easier in the future, thanks to new research results coming from the African Monsoon…

Virological evidence cannot prove transmission in HIV criminal cases, warn experts in this week’s BMJ. Viral phylogenetics provides a way of assessing the relations between viruses from different…

Apes bite and try to break a tube to retrieve the food inside while children follow the experimenter's example to get inside the tube to retrieve the prize, showing that even before preschool,…