Representative immunohistochemical images of anti-GFAP staining. The positive control (A) is provided to illustrate typical staining characteristics. The hydrocephalic cortex and hippocampus contain severe reactive astrocytosis (F and G respectively) when compared to their age-matched saline controls (C and D). The choroid plexus B and E in both groups were negative for GFAP. Arrows = reactive astrocytes, scale bar = 25 μm.