Probe:	Gli1 cDNA1
Probe preparation:	Antisense labelled with digoxigenin RNA

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

Structure	Level	Pattern	Image	Note
TS20: mandibular process	Present		1B
TS20: maxillary process	Present		1B

Structure	Level	Pattern	Image	Note
TS22: mandible	Present		1C
TS22: maxilla	Present		1C

Structure	Level	Pattern	Image	Note
TS18: face	Present	Regionally restricted	1D , 1G bottom right , 1G left , 1G top right	Faint expression was detected in the epithelium and strong expression in the mesenchyme of the facial dermis region. Expression was faint in the whisker follicle epithelium, but strong in the surrounding mesenchyme.
TS18: oral region	Present	Regionally restricted	1G top right , 1D , 1G bottom right , 1G left	Expression was detected in the oral mucosa region. No difference was noted between signals from epithelium and mesenchyme. Expression was faint in the tooth germ, but strong in the surrounding mesenchyme.
TS18: 1st branchial arch mandibular component	Strong	Regionally restricted	1G bottom right , 1D	Strong expression was detected in Meckel's cartilage.

Structure	Level	Pattern	Image	Note
TS20: oral region	Weak	Regionally restricted	1H bottom right , 1E , 1H left , 1H top right	Only faint signals were detected in both epithelium and mesenchyme around the oral dermis and mucosa.
TS20: vibrissa follicle	Weak	Regionally restricted	1H top right , 1E	Faint expression was detected in whisker follicle epithelium.
TS20: face mesenchyme	Strong	Regionally restricted	1E , 1H top right	Expression was strong in the mesenchyme surrounding the whisker follicles.
TS20: Meckel's cartilage	Strong		1H bottom right , 1E

Structure	Level	Pattern	Image	Note
TS22: oral region	Present	Regionally restricted	1I left , 1F , 1I bottom right , 1I top right	Expression in oral mucosa was stronger in epithelium than in mesenchyme.
TS22: face	Present	Regionally restricted	1F , 1I bottom right , 1I top right , 1I left	Expression was stronger in mesenchyme than epithelium in facial dermis.
TS22: vibrissa follicle	Weak	Regionally restricted	1F , 1I top right	Faint expression was detected in whisker follicle epithelium.
TS22: face mesenchyme	Strong	Regionally restricted	1F , 1I top right	Strong expression was detected in the mesenchyme surrounding the whisker follicles.
TS22: mandible	Strong	Regionally restricted	1I bottom right , 1F	Strong expression was detected in the mandible ossified from Meckel's cartilage.