Acetylcholine

Acetylcholine is a compound isolated from the ergot fungus, which affects animal tissues similar to certain nerves through a disease called ergotism which occasionally broke out in devastating epidemics. Its full significance was not understood until years later.
 Henry Hallett Dale England 1914 Acetylcholine

Acetylcholine is a compound isolated from the ergot fungus, which affects animal tissues similar to certain nerves through a disease called ergotism which occasionally broke out in devastating epidemics. Its full significance was not understood until years later.