In his new project, the researcher focuses on

the possible causes and factors involved in the development of stroke. In the

case of ischemic stroke, there is a lack of blood supply to a certain part of

the brain tissue, which dies due to lack of oxygen and nutrients. He is very

interested in one type of cells and its contribution to the development of this

condition. These are the cells that are part of the blood-brain barrier,

regulating blood flow through the capillaries, removing and phagocytizing dying

cells and regulating the permeability of this barrier. They are found around

the endothelium of the capillaries, even outside the nervous system, and

partially replace the tunica media, which is no longer present in the

capillaries. What are these cells called?