behavior — balance and coordination         balance beam   Kas1 latency to reach box via a narrow beam   [s] 6 strains   age 5-7mo   Inbred   behavior — balance and coordination         grid test   Kas1 inverted grid performance         • latency to fall  • hindlimb movement  • pct hindlimb movement  6 strains   age 5-7mo   Inbred   behavior — locomotor activity         monitoring system   Kas1 home cage activity [cm]         • novelty condition  • day 3    • comparison   6 strains   age 5-7mo   Inbred   nervous system — morphology — axon         microscopy   Kas1 ventral root (axon) area [µm2]         • ventral root  • median axon  6 strains   age 5-7mo   Inbred Kas1 number of ventral root axons [n]         • region of interest  • total    • comparison   6 strains   age 5-7mo   Inbred Kas1 percentage of ventral root axons [%]         µm2:  • 0-50   • 50-100   • 100-150   • 150-200     • comparison   6 strains   age 5-7mo   Inbred

Number of mice tested per strain, for each measurement