Expression of cadherin mRNA expression in the hippocampus of adult wild-type mice. (A) Thionin staining for anatomical structure. (B~N) Classic cadherin and protocadherin molecules. CA1–CA3, CA fields of hippocampus. DG, dentate gyrus. (B, F, J, L). Red dashed line, CA1; Black dashed line, DG. Scale bar=500 μm.