Microbubbles

One of the central problems in medicine is delivering drugs in the body, at the right time, place, and concentration. In many cases, less than one percent of an injected cancer drug dose actually reaches the tumor. The body is difficult terrain to navigate and unforgiving to outsiders. Some drugs need to evade immune cells, and many fail due to unsuccessful delivery. But the brain is even more forbidding. It has a defensive barrier that excludes nearly all large drugs, such as antibody therapies...