( n. )
A substance, present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the substance (myelin) forming the medullary sheaths of nerve fibers.
( n. )
A substance, present in the protoplasm of the retinal epithelium cells, and resembling, if not identical with, the substance (myelin) forming the medullary sheaths of nerve fibers.
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012