BLOOD VESSEL BREAKTHROUGH
Scientists at the University of California at San Diego identified a "switch" made from a short strand of genetic material that plays a crucial role in blood vessel renewal. They also produced a complementary molecule that can turn it off, and a way to deliver either particle into living tissue.
Effectively, the researchers put themselves into a biological driving seat that allowed them to press either accelerator or brake - ramping up blood vessel growth, or slowing it down, according to the journal Nature Medicine.