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. 2010 Nov 19;214(4):779–789. doi: 10.1007/s00213-010-2087-1

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© The Author(s) 2010

This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.

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Fig. 1 — Relationships between peripheral biomarkers and cognitive/clinical measures. a Associations between peripheral DRD3 mRNA levels in blood cells and pramipexole-induced changes in accuracy in working memory; b Association between peripheral COMT mRNA levels in blood cells and severity of stimulant dependence, as reflected by the number of DSM-IV criteria satisfied for the diagnosis of dependence on stimulant drugs. Levels of mRNA were not detectable in five blood samples (two stimulant users, three controls)