There is an urgent need for developing new drugs that can alleviate the harmful effects of a stroke because current treatment possibilities using thrombolysis are limited to the first hours following a stroke. To that end, researchers at Lund University in Sweden are studying brain cells known as pericytes. The team discovered in 2012 that pericytes can for new cells. According to a release from the university, the 2014 research shows for the first time that pericytes are directly involved in the reaction of the brain tissue after stroke.