BACE1 and Alzheimer disease: Expression of BACE1 was significantly enriched in the glomeruli of ventral MOB compared with the dorsal MOB both of 6- (ventral, ~39% dorsal, ~15%) (Figures 4d and e) and 14-month-old mice regardless of AD progression (ventral, ~42% dorsal, ~18%) (Figures 4f and g).