myelin

A white fatty material, composed chiefly of lipids and lipoproteins, that encloses certain axons and nerve fibers.

Resembling myelin: said of lecithin which has been placed in water and has become swollen and pasty. On microscopical examination it will then be seen to exist in the form of peculiar slimy droplets and threads, which are known as the myelin forms of the substance.

In anatomy, the white substance of Schwann, or medullary sheath of a nerve.

A soft white substance constituting the medullary sheaths of nerve fibers, and composed mainly of cholesterin, lecithin, cerebrin, protein, and some fat.

One of a group of phosphorized principles occurring in nerve tissue, both in the brain and nerve fibers.

A white, fatty material, composed of lipids and lipoproteins, that surrounds the axons of nerves.

a white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers