title: What is the blood-brain barrier?  I've heard that it may have something to do with psychiatric disorders.  Is that true?
authors.forename: Michael Craig
authors.initials: MC
authors.lastname: Miller
mesh_terms: D000818:Animals; D000928:Antidepressive Agents / Q000493:pharmacokinetics / Q000494:pharmacology; D001253:Astrocytes / Q000502:physiology; D001812:Blood-Brain Barrier / Q000187:drug effects / Q000502:physiology*; D001921:Brain / Q000187:drug effects; D002110:Caffeine / Q000493:pharmacokinetics / Q000494:pharmacology; D042783:Endothelial Cells / Q000502:physiology; D006801:Humans; D001523:Mental Disorders / Q000188:drug therapy / Q000503:physiopathology*; D009538:Nicotine / Q000493:pharmacokinetics / Q000494:pharmacology; D011619:Psychotropic Drugs / Q000493:pharmacokinetics / Q000494:pharmacology
chemical_list: D000928:Antidepressive Agents; D011619:Psychotropic Drugs; D002110:Caffeine; D009538:Nicotine