Fig. 9.
Reg3g is a marker of respiratory epithelial cells. A: Image of one-half of the nasal region shows expression restricted to the respiratory epithelium within the nasal cavity, as well as the nasal gland nearby. B: Transition between respiratory epithelium and olfactory epithelium (arrow) in a region of the septum where the olfactory epithelium was still expanding in this P21 mouse. C: In a region of the septum where growth of the olfactory epithelium has stabilized, the boundary is sharp (arrow). Scale bars = 250 μm in A; 25 μm in B,C.