Health Sciences

Researchers at the University of Pennsylvania have developed the first placenta-on-a-chip that can fully model the transport of nutrients across the placental barrier.

It has remained frustratingly difficult to develop a vaccine for HIV/AIDS, in part because the virus, once in our bodies, rapidly reproduces and evolves to escape being killed by the immune system.

By Patrick Ammerman You can’t study what you can’t see.

Jonas Salk created a vaccine against polio that has been used since 1955; Albert Sabin created another version that has been on the market since 1961. Together, these two vaccines have nearly eliminated polio from the face of the earth.

HIV researchers at the Perelman School of Medicine at the University of Pennsylvania and The Wistar Institute will co-lead a five-year, $23 million grant from the National Institutes of Health, as part of the second iteration of the 

Adolescence is a critical period for emotional maturation and is a time when significant symptoms of anxiety and depression can increase, particularly in females. Prior work by a team of Penn Medicine researchers found that sex-specific changes in cerebral blood flow (CBF) begin at puberty.

Want to cut calories and make healthier meal choices? Try avoiding unhealthy impulse purchases by ordering meals at least an hour before eating.

Would having your exercise performance compared to that of your peers motivate you do more? A new study suggests it might. And adding a financial incentive would only sweeten the deal even more.

By Patrick Ammerman

The microenvironment of tumors is a mix of cell types, mostly comprised of inflammatory cells. White blood cells, recruited from the blood and bone marrow, represent a significant portion of these inflammatory cells and influence nearly all steps of tumor progression.