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Scientists have identified a cell type believed to play a role in controlling the early infectious process against Francisella tularensis, a respiratory pathogen and bioterrorism agent that is the cause of tularemia. The findings are published in the Proceedings of the National Academy of Sciences.

The emergence of methicillin-resistant Staphylococcus aureus as a major pathogen has led to more complications and longer hospital stays for children with acute bone infections.

A topical spray reduced pain by 34 percent in children undergoing intravenous procedures, such as injections and tube insertions, compared with a placebo group. The findings from this double-blind, randomized controlled trial have clinical implications.

In a breakthrough scientific study, scientists have shown that neural stem cell development may be linked to Autism. The study demonstrated that mice lacking the myocyte enhancer factor 2C protein in neural stem cells had smaller brains, fewer nerve cells and showed behaviors similar to those seen in humans with a form of autism known as Rett syndrome.

By studying a rare, inherited form of migraine, researchers at Vanderbilt University Medical Center have found clues to the biological basis of the painful, debilitating disorder.

Researchers have invented a technique in which DNA assays -- the key to personalized medicine -- can be read and evaluated with no need of elaborate chemical labeling or sophisticated instrumentation. Based on electrostatic repulsion that yields images visible to the naked eye, the technique could revolutionize the use of DNA microarrays for both research and diagnostics.

Low levels of good cholesterol are associated with diminished memory by age 60. Researchers encourage physicians to monitor levels of good cholesterol.

A survey of 17 countries has found that despite its punitive drug policies the United States has the highest levels of illegal cocaine and cannabis use. Cannabis use was highest in the US (42.4%). Drug use "does not appear to be simply related to drug policy," say the authors, "since countries with more stringent policies towards illegal drug use did not have lower levels of such drug use than countries with more liberal policies." In the Netherlands, for example, which has more liberal policies than the US, 19.8% reported cannabis use.

Pediatric non-alcoholic fatty liver disease (NAFLD) raises cardiovascular risk in overweight and obese children. More than 6 million children in the United States have the fatty liver disease. NAFLD is most prevalent in children and adolescents of Hispanic and Asian ethnicity. Researchers suggest all obese children and those with symptoms of metabolic syndrome be screened for NAFLD.

A cold slice of watermelon has long been a Fourth of July holiday staple. But according to recent studies, the juicy fruit may be better suited for Valentine’s Day. That’s because scientists say watermelon has ingredients that deliver Viagra-like effects to the body’s blood vessels and may even increase libido.