Size matters in particle treatments of traumatic injuries

Traumatic injuries are the leading cause of death in the U.S. among people 45 and under, and such injuries account for more than 3 million deaths per year worldwide. To reduce the death toll of such injuries, many researchers are working on injectable nanoparticles that can home in on the site of an internal injury and attract cells that help to stop the bleeding until the patient can reach a hospital for further treatment.