Fig. 5.

Impaired neurogenesis in the olfactory epithelium of embryos lacking XDmrt4 function. (A) XDmrt4-mo or XDmrt4ΔC mRNA-injected embryos show a marked reduction in NCAM expression in the olfactory epithelium (arrows). Injection of a control morpholino (Co-mo) has no effect on NCAM expression levels. Anterior views are shown, dorsal to the top. (B) Transverse section through the head of an XDmrt4-mo-injected embryo stained for NCAM shows a reduced number of neurons in the olfactory epithelium on the injected side (arrow). cg, cement gland; f, forebrain. (Magnifications: ×15.)