Brain vessels enter the central nervous system through holes in the meningeal layers. The cells in the blood vessel walls are joined tightly to one another, forming the blood–brain barrier, which blocks the passage of many toxins and pathogens (though at the same time blocking antibodies and some drugs, thereby presenting special challenges in treatment of diseases of the brain). Neuroanatomists usually divide the vertebrate brain into six main regions: the telencephalon (cerebral hemispheres), diencephalon (thalamus and hypothalamus), mesencephalon (midbrain), cerebellum, pons, and medulla oblongata. Each of these areas has a complex internal structure. Some parts, such as the cerebral cortex
Where the Spies Are Where the Spies Are Where the Spies Are is a 1966 British comedy adventure film directed by Val Guest and featuring David Niven as Dr Jason Love, Françoise Dorléac, John Le Mesurier, Cyril Cusack and Richard Marner. It was based on the James Leasor book "Passport to Oblivion" which was also the working title of the film. MGM intended to make a Jason Love film series but the idea was shelved. Rosser, a British agent is assassinated in Beirut. British intelligence boss MacGillivray recruits Dr Jason Love, who did some intelligence work during World War Two, to attend a medical