CD63 and Dravet syndrome: Upregulation of CD63 RNA expression was observed in Ts2 brains as compared with 2N controls (29% higher p = 0.0286; ddCt values expressed as mean ± SEM were 2.3558 ± 0.1966 in 2N and 3.0382 ± 0.1954 in DS; n = 5 per genotype).