c, Left, paw placement records of eight-week-old mice. Right, stride lengths corrected for paw base widths (stride/width ratio) of Atg5flox/flox; nestin-Cre and control (Atg5flox/+; nestin-Cre) littermate mice. Values represent means ± s.d. of four mice. Asterisk, P 0.01 (Students t-test). 