Secretory and maturation stage enamel organ express E- and N-cadherins, p120 catenin and <i>Arvcf</i>.

<p>qPCR was performed to identify the expression levels of adherens junction proteins in enamel organs responsible for dental enamel development. Expression was assessed in first molar enamel organs from mice at the indicated age. At days 5–7, enamel organs are predominantly at the secretory stage and at days 9–11, enamel organs are predominantly at the maturation stage of enamel development. Note that p120 is expressed at constant levels across these development stages. Arvcf is highly homologous to p120 and this is the first demonstration of its expression in the mammalian enamel organ. Each time point was performed in duplicate with RNA from six different enamel organs. *, P<0.05; **, P<0.01; ***, P<0.001.