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. 2015 Jan 6;5:195. doi: 10.3389/fpsyt.2014.00195

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Copyright © 2015 Partonen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Schematic of mood regulation affected by the circadian clock proteins (NR1D1, PER2, CRY2, CRY1) and by the activity of brown adipose tissue. Abbreviations: NR1D1, nuclear receptor subfamily 1, group D, member 1; PER2, period 2; CRY2, cryptochrome 2; CRY1, cryptochrome 1.