HMOX1 and subarachnoid hemorrhage: Immunohistochemical staining showed a significantly increased intensity of heme oxygenase-1 immunofluorescence in the choroid plexus epithelial cells 1, 3, and 7 days (p < 0.05) following subarachnoid hemorrhage induction or artificial cerebrospinal fluid application compared to naïve animals with the highest intensity at one-day of subarachnoid hemorrhage.