C, D. Western blots against NPC1 and actin-β (ACTB) in total brain (C) and synaptosomes (D) from wt and NPC1nmf164 mice. Graphs show mean ± SEM NPC1 level normalized to ACTB as a percentage of control (wt) values (n=4 mice, 3 month-old, unpaired Student t test, **psynaptosomes= 0.0037). 