The Census Bureau can also provide statisics and demographics cor the years 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 and 2009 on their website.
dopamine. n. 1. (Biochemistry) a chemical found in the brain that acts as a neurotransmitter and is an intermediate compound in the synthesis of noradrenaline.oun. 1. dopamine-a monoamine neurotransmitter found in the brain and essential for the normal functioning of the central nervous system; as a drug (trade names Dopastat and Intropin) it is used to treat shock and hypotension.
Abbreviation: HMPAO. A radioactive tracer consisting of technetium-99m linked to hexamethylpropyleneamine oxime. It is used to make nuclear imaging scans of the brain, e.g., in the determination of brain death. Absence of uptake of the molecule by the brain is diagnostic of brain death.