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. 2017 Dec 29;6:e33415. doi: 10.7554/eLife.33415

Table 1. Housing conditions in enriched environment (EE).

Variables Value
EE cage size (cm) 36 x54 x19
EE cage composition polycarbonate
Control cage polycarbonate
EE floor space/mouse (cm 2) 195
# Mice/EE cage 10
Stimulating toys/objects in EE cage 2 running wheels, tunnels, 2 refuges 1 swing, with nesting material
Objects varied regularly? Yes
Strain of mice C57BL/6
Sex of mice Male
EE, control cages in same room? Yes
Lighting 12 hours on/off
Temp (degrees C) 22 ± 1
Bedding Sawdust
Humidity control? No
Cleaning schedule Once a week
Food based on wheat, oats, meat, soy and milk? Yes (14% protein, 5% fat, 3041 kcal ME/kg)
Microbiota endemic in animal facility Norovirus, Helicobacter
Age of mice put in cage initially 3 weeks
# weeks habituation 5 weeks
Tumor injected GL261
Route injected intrastriatal
# Cells injected 7.5×104
Mouse handling frequency Every 3 days
Statistical significance in tumor size? Yes