Photomicrographs of immunohistochemical staining for tumor necrosis factor (TNF)-α, interleukin (IL)-1β, IL-6 and nuclear factor (NF)-κB. Upper panel: TNF-α positive results for the (A) control, (B) subarachnoid haemorrhage (SAH) and (C) SAH + simvastatin (5 mg/kg) and (D) SAH + taurine groups. (E) NF-κB positive results of immunohistochemical stain (magnification, x20 and x40), (F) IL-1β positive results of immunohistochemical stain (magnification, x20 and x40), (G) IL-6 positive results of immunohistochemical stain (magnification, x20 and x40).