"Interestingly the ependymal lining of the ventricles regionally deficient, particularly at the frontal horns (see ependymitis granularis), and becomes progressively less complete with age 1."
Expected headings
"Immunohistochemistry"
"There is debate about the relationship of normal and neoplastic ependymocytes and staining for GFAP. Both neoplastic, and to a lesser degree normal ependymocytes to demonstrate a positive reaction for GFAP 3,4. This may, however, represent a positive reaction to intermediate filaments that are similar, rather than to GFAP itself which is absent in normal adult ependymocytes 3."