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Science 10 February 2006:
Vol. 311. no. 5762, p. 759
DOI: 10.1126/science.311.5762.759
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News of the Week

NEUROSCIENCE:
Bullied Mice Implicate Brain's Reward Pathway in Mood Disorders

Constance Holden

On page 864, scientists show that when a bullied mouse becomes fearful and withdrawn, the brain's reward circuits--the areas usually associated with addiction--play a big role in these reactions. Furthermore, they find that such negative responses are enabled by brain-derived neurotrophic factor, a chemical that elsewhere in the brain is associated with antidepressant actions. (Read more.)

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Science. ISSN 0036-8075 (print), 1095-9203 (online)