(F-G) Body weight (F) and length (G) of Fus+/+, Fus+/- and Fus-/- pups at birth; N=14 Fus+/+, N=36 Fus+/- and N=13 Fus-/- for body weight; N=6 per genotype for body length; (**) p<0.01 vs Fus+/+, (##) p<0.01 vs Fus+/- ; One way ANOVA followed by Tukey post hoc test. 