Localization of Nerve Endings in Relation to Cholinesterase Deposits in Normal Human Eye Muscles.

Neroe endings and deposits of cholinesterase were stained in frozen sections of five normal striated human eye muscles with a stain that combines the neroe fiber techniijue of Hortega and the method of Koelle and Friedenwald for the demonstration of cholinesterase. Cholinesterase deposits are found at the base of the motor end plates. Dense cholinesterase deposits can also he found around thin nerves which form simple ringor buttonshaped endings on muscle fibers. No cholinesterase is seen at the endings of the other type of thin (sympathetic?) nerves which also supply the muscle fibers and have networklike end formations as well as at all types of sensory (afferent) nerve endings in human eye muscle.