Probe:	Irf6 cDNA2
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component ectoderm	Present	Regionally restricted	1A	Expression is seen in the line of fusion between apposed mandibular processes.
TS17: latero-nasal process ectoderm	Present	Regionally restricted	1A	Expression is detected in the epithelial fusion zone between the medial and lateral nasal processes.
TS17: medial-nasal process ectoderm	Present	Regionally restricted	1A	Expression is detected in the epithelial fusion zone between the medial and lateral nasal processes.

Structure	Level	Pattern	Image	Note
TS17: 1st branchial arch mandibular component ectoderm	Present		1E	Expression is seen in the line of fusion between apposed mandibular processes.
TS17: 1st branchial arch maxillary component ectoderm	Present		1E
TS17: 2nd branchial arch ectoderm	Present		1E

Structure	Level	Pattern	Image	Note
TS18: 1st branchial arch mandibular component ectoderm	Present		1B
TS18: latero-nasal process ectoderm	Strong	Regionally restricted	1B	Expression is detected in the epithelial fusion zone between the medial and lateral nasal processes.
TS18: medial-nasal process ectoderm	Strong	Regionally restricted	1B	Expression is detected in the epithelial fusion zone between the medial and lateral nasal processes.

Structure	Level	Pattern	Image	Note
TS18: 1st branchial arch mandibular component ectoderm	Present		1F
TS18: 1st branchial arch maxillary component ectoderm	Present		1F

Structure	Level	Pattern	Image	Note
TS19: maxilla primordium	Present	Regionally restricted	1C	Expression is present in the epithelium of the intermaxillary segment.

Structure	Level	Pattern	Image	Note
TS19: naso-lacrimal groove	Strong		1G

Structure	Level	Pattern	Image	Note
TS21: naris	Present		1D
TS21: incisor	Strong		1D
TS21: molar	Strong		1D
TS21: oral epithelium	Present	Regionally restricted	1D	Expression is present in the epithelium lining the floor of the mouth, particularly in the region close to the base of the tongue.

Structure	Level	Pattern	Image	Note
TS21: vibrissa follicle	Present		1H
TS21: hair follicle	Present		1H	Expression is present in the supra- and infra-orbital hair follicles.

Structure	Level	Pattern	Image	Note
TS21: palatal shelf	Present	Regionally restricted	2A	Expression is present in the tips immediately prior to palatal shelf elevation.
TS21: upper jaw tooth	Present		2A

Structure	Level	Pattern	Image	Note
TS22: palatal shelf	Present	Regionally restricted	2B	Expression is present in the medial edge during palatal fusion.
TS22: upper jaw tooth	Present		2B

Structure	Level	Pattern	Image	Note
TS22: palatal shelf	Present	Regionally restricted	2C	Expression is present in the medial edge during palatal fusion.