Reporter:	lacZ
	Direct Detection

Structure	Level	Pattern	Image	Note
TS28: tail skin	Present	Regionally restricted	2B
TS28: epidermis cornified layer	Present		2B
TS28: epidermis suprabasal layer	Present		2B
TS28: hair follicle	Present		2B
TS28: sebaceous gland	Present		2B

Structure	Level	Pattern	Image	Note
TS22: nose	Present		4A Cx30.3lacZ/lacZ
TS22: vibrissa	Present		4A Cx30.3lacZ/lacZ

Structure	Level	Pattern	Image	Note
TS20: olfactory epithelium	Present		4B

Structure	Level	Pattern	Image	Note
TS28: olfactory epithelium	Present	Regionally restricted	4C	At postnatal week 4, lacZ staining was still found in the region of the olfactory epithelium that covers the complex turbinate structures in the posterior nasal cavity. A large part of the chemosensory surface was stained, extending along the anterior-posterior axis of the nose. Only the dorsal part close to the cribriform plate contained expressing cells, whereas the more ventral domain was devoid of staining.
TS28: main olfactory bulb	Absent		4C
TS28: nasal cavity respiratory epithelium	Absent		4C

Structure	Level	Pattern	Image	Note
TS28: olfactory epithelium	Present	Regionally restricted	4E , 4F	LacZ-stained cells were retricted to particular areas; activity was found only along the dorsal part of the septum extending into the dorsal recess and the tip of turbinates. Expressing cells were located in the dorsal zone of the epithelium.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: olfactory epithelium		Present	Regionally restricted	5A	LacZ-positive cells were restricted to the cellular layer of the epithelium.
TS28: olfactory epithelium	olfactory epithelial supporting cell	Absent		5A	Sustentacular cells were not labeled.
TS28: nasal cavity lamina propria		Absent		5A

Structure	Level	Pattern	Image	Note
TS28: olfactory epithelium	Present	Regionally restricted	5E	Beta-galactosidase activity increased over time. A population of beta-galactosidase-expressing cells persisted throughout life.

Structure	Level	Pattern	Image	Note
TS28: olfactory epithelium	Present	Regionally restricted	5F	Beta-galactosidase activity increased over time. A population of beta-galactosidase-expressing cells persisted throughout life.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: vomeronasal organ sensory epithelium		Present	Regionally restricted	6B , 6A	Beta-galactosidase-expressing cells were dispersed throughout the chemosensory epithelium; however, they appeared to be distributed non-homogeneously. Closer examination of their position in the epithelium indicated that they were located in the apical half, whereas the basal half had almost no labelled cells.
TS28: vomeronasal organ sensory epithelium	vomeronasal sensory neuron	Present	Regionally restricted	6B , 6A	Comparison with labeling on an adjacent section indicated that these beta-galactosidase-expressing cells were specifically co-localized with the V1R-expressing vomeronasal sensory neurons and not those expressing the V2R family.

Structure	Level	Pattern	Image	Note
TS28: septal olfactory organ	Absent
TS28: vomeronasal organ non-sensory epithelium	Absent