A roast beef sandwich on white bread is a deli classic. Usually made with beef from the round, or hind leg, section of the cow -- roast beef is one of the leaner cuts of beef with fewer calories than fattier sections. Video of the Day
corpus callosum. a great band of deeply situated transverse white fibers uniting the two halves of the cerebrum in humans and other mammals.
The corpus callosum is a large bundle of axons that connects the right and left cerebral hemispheres. The axons are processes of pyramidal cells in the cerebral cortex, and they carry information, in the form of patterns of nerve impulses, from cells of one hemisphere to cells in the contralateral hemisphere.