GFAP and Stroke: Figure 4B shows the expression of the GFAP gene in all groups with I/R. Telmisartan had similar expression levels of GFAP (0.0007-fold) to the stroke group (0.0008-fold). In the EAOr group, GFAP expression increased significantly, by more than threefold (0.0028-fold), when compared to the stroke group.