Ontogeny of MeCP2 protein isoforms in rat lung at birth (d0), postnatal day 7 (d7) and day 21 (d21). Male (panel a) and female (panel b) lungs were examined. Inserts are representative western blots. Differences in MeCP2 protein between d0, d7 and d21, for each gender, were assessed with ANOVA with Fisher’s PLSD. Significant difference to d0 indicated by *, significant difference to d7 indicated by #. n=6.