β-catenin cellular localization is changed in the dental epithelium of <i>Dact2</i> null mice.

<p>(<b>A</b> and <b>E</b>) E18.5 WT and <i>Dact2^−/−</i> lower incisors were examined by immunohistochemistry for β-catenin expression. Boxed region were examined under higher magnification. (<b>B</b> and <b>F</b>) Detailed views of the labial dental epithelium were shown. β-catenin was labeled with FITC. (<b>C</b> and <b>G</b>) Nuclei were stained with DAPI. (<b>D</b> and <b>H</b>) Merged signals of FITC and DAPI are shown. Arrowheads indicate the differentially localized β-catenin. MES, mesenchyme; OD, odontoblasts; AB, ameloblast; SI, stratum intermedium.