RBFOX3 and fleck corneal dystrophy: However, we found no differences in the number of neuronal nuclei antigen (NeuN)-expressing interstitial neurons between drug-resistant epilepsy patients with focal cortical dysplasia (FCD) or temporal lobe epilepsy (TLE) and control brain sample, quantified by dividing the white matter every 200 μm bin from the border between the white matter and grey matter to the deep white matter (Figure 1B–E).