Expression of STEP in the cerebellar vermis and BA9 of subjects with autism and controls. Control group data are presented as gray histogram bars; autistic group data are presented as black histogram bars. (A) and (F) STEP 66 kDa. (B) and (G) STEP 61 kDa. (C) and (H) STEP 46 kDa. (D) and (I). STEP 33 kDa. (F) and (J) STEP 27 kDa. Error bars express standard error of the mean. *P <0.05. STEP, striatal-enriched protein tyrosine phosphatase; NSE, neuronal specific enolase; BA9, Brodmann Area 9.