Maybe mr.A will look me in weird way if I hung one of this poster in our wall. But these chemical compound of brain neurotransmitter posters are too beautiful to ignored (me, yes a geek!). Then the chemical structure is marvelous. These posters also gave us the information about how it works and how it will affect your life, since they are The Ingredients of our Life.
These posters can download in here.
And these are from here.