CUTHBERT, A W An acetylcholine-like substance and cholinesterase in the smooth muscle of the chick amnion. [electronic resource] - The Journal of physiology Apr 1963 - 284-95 p. digital Publication Type: Journal Article ISSN: 0022-3751 Standard No.: 10.1113/jphysiol.1963.sp007105 doi Subjects--Topical Terms: AcetylcholineAmnionAnimalsChickensCholinesterasesMuscle, SmoothMuscles