Washington University researchers are developing a device that could vastly improve how doctors treat cancer and other diseases in the brain.
Delivering drugs to the brain is complicated because the three-pound organ is shielded by a complex network of blood vessels, called the blood-brain barrier, that keeps out foreign substances. However, the fortress of vessels works so well that it's challenging to provide medication through a pill or an injection.
The Wash U device could change everything. It would deliver tiny particles by nasal spray.