Many adults over age 35 cover their mouth to avoid smiling in public in order to hide their teeth darkened by tetracycline stains. Typically, invasive as well as costly treatment options, such as veneers, crowns and bonding, served as the only treatment options to help these individuals hide such stains and boost their self-esteem.

The rusty crayfish - a voracious, bullying exotic that has visited ecological havoc on numerous Wisconsin lakes - may have finally met its match.

Researchers from the University of Pennsylvania School of Veterinary Medicine have identified how molecules of microRNA are responsible for the growth of blood vessels in a model for human colon cancer. The process, called angiogenesis, results in ability of ravenous cancer cells to recruit blood vessels and receive a steady supply of nutrients and oxygen.

Researchers at the University of Minnesota were successful in using robotic surgery to deliver stem cell treatment to damaged heart tissue in pigs.

In a finding that may have broader implications for understanding kidney disorders, genetics researchers at The Children's Hospital of Philadelphia have identified a second gene that gives rise to Alagille syndrome, a genetic developmental disease that affects multiple organs. The Children's Hospital team previously discovered the first gene associated with this disease.

Reports of a traditional Chinese medicine having beneficial effects for people suffering from type 2 diabetesnow has some scientific evidence to back up the claims. A collaboration between Chinese, Korean, andAustralian scientists at Sydney's Garvan Institute, has revealed that the natural plant product berberine could be a valuable new treatment.