Teeth are organs which develop by inductive interactions between dental epi
thelium and subjacent mesenchyme. In order to identify genes involved in od
ontoblast and ameloblast differentiation, we have constructed a cDNA librar
y from E19.5 mouse molars. In this work, we report partial DNA sequences of
10 non-characterized genes. In addition, we show cell expression of the tr
anscripts in mouse embryo molars by in situ hybridization. We discuss the r
ole of these genes in cell differentiation.