(B) α-Synuclein was immunoblotted in WT and MPS-IIIA both total and synaptosomal brain fractions at indicated ages after sequential extraction with detergents with increased strength. Soluble (Sol.), lowly insoluble (L. Insol.) and highly insoluble (H. Insol.) forms correspond to the protein solubilized respectively in Triton-X100, SDS 10% and 8M UREA. 