Acclimation & testing periods
Vendor C57BL/6J, DBA/2J, and (C57BL/6J x DBA/2J)F1 (B6D2F1) were obtained from Janvier, France; BXD strains were obtained from The Jackson Laboratory, University of Tennessee Health Science Center, and Harlan (Netherlands). Ages9-18 wks FeedNot specified, given ad libitum WaterNot specified, given ad libitum HousingNot specified PhotoperiodNot specified TemperatureNot specified Relative humidityNot specified Health statusSpecific pathogen free (SPF) Regulatory complianceMice were maintained under specific pathogen free conditions and according to the German animal welfare law. All experiments were approved by an external committee according to the German regulations on animal welfare.