Probe:	Penk cDNA1
Probe preparation:	Antisense labelled with digoxigenin RNA
Visualized with:	Alkaline phosphatase

Structure	Level	Pattern	Image	Note
TS19: nasal process	Present	Regionally restricted	1F	Expression is seen near the zone of fusion in the primary palate.

Structure	Level	Pattern	Image	Note
TS23: face mesenchyme	Present	Regionally restricted	8A	Expression is seen in mesenchyme adjacent to vibrissae.
TS23: face skin	Present	Regionally restricted	8A	Expression is seen in dermis near the vestibule.
TS23: lateral nasal gland	Present		8A , 8C
TS23: nasal mesenchyme	Present	Regionally restricted	8C , 8A	Expression is seen in the mesenchyme adjacent to the respiratory epithelium/vestibule.
TS23: nasal septum	Present		8A

Structure	Level	Pattern	Image	Note
TS23: face mesenchyme	Present	Regionally restricted	8B	Expression is seen in the mesenchyme adjacent to the vestibule.
TS23: nasal capsule	Present	Regionally restricted	8D , 8B	Expression is seen in the perichondrium and connective tissue of the lateral nasal capsule.
TS23: cranium bone primordium	Present	Regionally restricted	8B , 8D	Expression is present in the perichondrium lateral to the turbinates and the nasal septum.
TS23: nasal mesenchyme	Present	Regionally restricted	8D , 8B	Expression is seen in the connective tissue lateral to the turbinates.
TS23: turbinate bone primordium	Absent		8D , 8B	No expression is seen in the cartilaginous turbinates.
TS23: nasal septum cartilage	Present		8E , 8B	Expression is seen in the the chondrocytes and the cells of the perichondrium.

Structure	Level	Pattern	Image	Note
TS23: nasal cavity	Present			Expression is seen in the vestibule.
TS23: vibrissa	Present
TS23: nasal septum	Present
TS23: olfactory epithelium	Present
TS23: nasal cavity respiratory epithelium	Absent
TS23: lateral nasal gland	Present