DCX and Focal cortical dysplasia: By contrast, in a previous study a differential DCX expression pattern was described in different ages (Srikandarajah et al., 2009): DCX + cells were identified mainly in biopsies from pediatric patients with epilepsy and focal cortical dysplasia, but they were not found in significant numbers in other epilepsy pathologies or in the cortex of post-mortem tissue of non-epileptic patients of similar age.