IL10 and glioblastoma: The authors discovered that, after activation by glioblastoma tumor cells, pericytes secrete high levels of anti‐inflammatory cytokines, such as IL‐10 and TGFβ, while they do not produce proinflammatory cytokines, such as IL‐1, IL‐23, and IL12, which could be produced in other conditions by brain pericytes 49.