title: Some comments on the "Effect of aging on the blood-brain barrier".
authors: Department of Neurology, University Hospitals of Cleveland, OH 44106.
authors: S I
authors: SI
authors: Harik
mesh_terms: D000368:Aged; D000375:Aging / Q000502:physiology*; D000818:Animals; D001808:Blood Vessels / Q000294:innervation; D001812:Blood-Brain Barrier; D002196:Capillaries / Q000294:innervation; D002560:Cerebrovascular Circulation; D006801:Humans; D008125:Locus Coeruleus / Q000098:blood supply; D009424:Nervous System Physiological Phenomena; D009638:Norepinephrine / Q000502:physiology
chemical_list: D009638:Norepinephrine