to the importance of considering developmental effects on gene expression. Similar data from human brain development has been relatively sparse, in part due to the rarity of appropriate postmortem tissue samples from healthy pediatric subjects. However, a gradually accumulating body of literature has provided evidence of postnatal changes in genes, including dopamine transporter, BDNF, and its receptor tyrosine kinase B, among others (Webster, Herman, Kleinman, & Shannon Weickert, 2006; Weickert et al., 2007).
