Fig. 4: The activity levels of three key enzymes in the Nf-Con, the Nf-apoE−/− and three GSf-apoE−/− groups.

A The GST activity level of the Nf-apoE−/− group was significantly lower than that of the Nf-Con group and recovered in the 2.0 g GSf-apoE−/− group. B The reduced SOD activity levels in the NfapoE −/− group compared to those in the Nf-Con group were recovered in the 0.4 g and 1.0 g GSfapoE−/− groups. C The reduced activity of AchE in the Nf-apoE−/− group compared to that in the NfCon group was significantly recovered in the three GSf-apoE−/− groups.