An Unwelcome Gift from Gorillas
Week of July 3

GorillaFor years scientists have searched for the sources of HIV - Human Immunodeficiency Virus. What complicates the effort is the various groups of HIV-1. For example, HIV-1 has four groups: M and N have been traced to chimpanzees. In fact ninety percent, or forty million, of the world’s AIDS cases are caused by Group M viruses. But the origins of groups O and P, which have infected over one hundred thousand Africans, were a mystery – until now... More »

Microlesions in Epilepsy
Week of June 12

Microlesions in EpilepsyYou may not be aware that epilepsy affects one in a hundred Americans, making it a rather common brain disorder. A contestant on this season’s American Idol is epileptic and had to wear dark glasses to keep the blinking lights from triggering an attack.

While some people respond well to treatment, a third don’t and for most epileptics the cause of their seizures remains a mystery. Researchers are looking into a possible explanation. Using a combination of genetic analysis, mathematical modeling and microscopic imaging, scientists have identified millimeter sized microlesions in the brains of fifteen people who had surgery for their epilepsy. Their brains had otherwise appeared normal... More »

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