SLC6A4 and Werner syndrome: Specifically, given previous qualitative observations of global increases in SERT axon density in ASD [34, 35] and a pattern of opposing directions of change in WS and ASD cytoarchitecture [7, 8, 18], we predicted SERT axon density of the amygdala would be increased in ASD and decreased in WS compared to NT and that the basolateral nuclei would demonstrate the greatest differences between the two disorders.