Dopamine: Important neurotransmitter in the brain. It is classified as a catecholamine, which is a class of molecules that serve as neurotransmitters and hormones. It is a precursor of adrenaline.
- "Dopamine definition - Medical Dictionary definitions of popular medical terms easily defined on MedTerms." Web. 10 Dec. 2009. <http://www.medterms.com/script/main/art.asp?articlekey=14345>.
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