A mid-aqueductal ependymal organ in the brain of the hyrax (Procavia capensis).
D000818:Animals; D002552:Cerebral Ventricles / Q000033:anatomy & histology*; D004805:Ependyma / Q000033:anatomy & histology* / Q000098:blood supply; D008297:Male; D008322:Mammals / Q000033:anatomy & histology*; D008636:Mesencephalon / Q000033:anatomy & histology; D009457:Neuroglia