2007 Image of the Year

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Relating human brain chemistry and behavior: The 2007 Image of the Year-corroborating the relevance of brain enzyme MAO A in aggressive personality-is actually a series of four images: one providing a view of human genes with high and low concentrations of MAO A; one of a brain positron emission tomography (PET) scan showing brain MAO A activity; and two images of human aggression. The image is provided by Brookhaven National Laboratory.

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