As shown in Figures 6A,B, the expression levels of PSD95 mRNA in the hippocampus were lower in the mice in the CRS and MS + CRS groups than in the mice in the control group [PSD95: F(2, 9) = 10.856, P < 0.05, P < 0.01; synaptophysin: F(2, 9) = 17.920, P < 0.05, P < 0.001]. Here, SYP is linked to congenital rubella syndrome.