Figure 4: Effect of glucosylceramide on the memory deficit in aged mice through Morris water maze task. Glucosylceramide (50 mg/kg) or vehicle (saline) was orally administered to mice for 3 months before training trial session. The training trial and the probe trial sessions were performed as described in Section 2. Results are expressed as means ± S.E.M. # in comparison with young group, * in comparison with saline group ( in each group).