Health Sciences

Dentists rely on composite materials to perform restorative procedures, such as filling cavities. Yet these materials, like tooth enamel, can be vulnerable to the growth of plaque, the sticky biofilm that leads to tooth decay.

In mammals, including humans, the cells that contract the heart muscle and enable it to beat do not regenerate after injury. After a heart attack, there is a dramatic loss of these heart muscle cells and those that survive cannot effectively replicate.

Low-frequency rhythms of brain activity, when brain waves move up and down slowly, primarily drive communication between the frontal, temporal and medial temporal lobes.

Four members of the University of Pennsylvania faculty have been named Fellows of the American Association for the Advancement of Science. Election as an AAAS Fellow is an honor bestowed upon members of AAAS, the world’s largest general scientific society, by their peers.

Those who continue to binge eat while trying to lose weight drop about half as much as those who don’t or those who do and subsequently stop.

A new study by University of Pennsylvania veterinary researchers has found that blood samples collected from an intravenous catheter using a special “mixing” technique are as accurate as those collected via venipuncture, in which a needle is used to access the vein directly.

By Erica AndersenCertain mosquitoes don’t get heartworm, and Barbara Biney was keen to find out why.

What can Twitter reveal about people with attention-deficit/hyperactivity disorder, or ADHD?

The first view of the physical mechanism of how a blood clot contracts at the level of individual platelets is giving researchers from the Perelman School of Medicine at the University of Pennsylvania a new look at a natural process that is part of blood clotting. A team led by John W.

Penn Medicine will conduct the Northeast’s first clinical trial of uterine transplants, to provide women with Uterine Factor Infertility (UFI) - an irreversible form of female infertility that affects as many as 5 percent of women worldwide and 50,000 women in the United States - with a new path to parenthood.