An acetylcholine-like substance and cholinesterase in the smooth muscle of the chick amnion.
D000109:Acetylcholine; D000650:Amnion; D000818:Animals; D002645:Chickens; D002802:Cholinesterases; D009130:Muscle, Smooth; D009132:Muscles
D002802:Cholinesterases; D000109:Acetylcholine
ACETYLCHOLINE; CHOLINESTERASE; MUSCLE, SMOOTH