Quantitative differences in the length of the nestin-positive trabecular zone (upper panel) between wild-type (30 measurements, three mice) and Dnmt2−/− (21 measurements, two mice) and in bone periostin-positive marrow areas (lower panel) between wild-type (26 measurements, three mice) and Dnmt2−/− (45 measurements, three mice) in femur sections from 8-day-old mice. Data are presented as mean ± SD. 