this includes all of the transmitters and amino acids.
http://www.benbest.com/science/anatm...0.html#glycine
I truly do not understand why other transmitters are not as focused upon. A google search [again with acetylcholne written everywhere].
http://www.google.com/search?q=does+...8&sourceid=ie7
http://en.wikipedia.org/wiki/Acetylcholine
paula