IL1B and ischemia: The rapid release of TNFα, IL‐6, IL‐1β, and interferon γ (IFNγ) by microglia upon ischemia induces the upregulation of adhesion molecules such P‐Selectin, E‐Selectin, intercellular adhesion molecule (ICAM), and vascular cell adhesion molecule (VCAM) by endothelial cells (111).