First detected at 9.25 dpc, specifically in the mesonephric vesicles. By 10.0 dpc expression is also observed in the rostro-lateral mandibular mesenchyme immediately adjacent to the maxillary processes. In the developing limb buds it is expressed in a unique mesenchymal domain and the onset of the expression follows a distinct dorsal to ventral developmental time sequence beginning in the forelimb and then in the hindlimb. It exhibits a dynamic expression pattern during craniofacial development, in the mandibular and maxillary processes as well as the developing palate. It is also expressed at sites of epithelial-mesenchymal interactions during tooth and kidney development. Belongs to the Odd C2H2-type zinc-finger protein family.