The animal experiments were approved by local authorities and conducted according to current regulations for animal experimentation in Germany and the European Union (European Communities Council Directive 2010/63/EU). Three-week-old, male B6 mice (n = 15, C57BL/6N, Martinsried, Germany) and DBA mice (n = 15, DBA/2, Charles River, Sulzfeld, Germany) were purchased and housed in groups of three for 11 weeks at the animal facility of the Max Planck Institute of Psychiatry under standard conditions as previously described [35 (link)].
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