Fig. 6

Expression level of proteins related to Alzheimer’s disease. The expression of tau protein in the hippocampus was increased in PFOS mice compared to control mice. There was no change in the expression of phosphorylated tau (Ser404) and GSK3 \(\beta\) in PFOS group. * indicates p < 0.05 by Mann–Whitney test. Data are expressed as the mean \(\pm\) SEM. n = 5 mice in each group