Probe:	Cyp26c1 cDNA
Probe preparation:	Antisense labelled with S35 RNA
Visualized with:	Autoradiography

Structure	Level	Pattern	Image	Note
TS17: endolymphatic appendage epithelium	Present		4A
TS17: otocyst epithelium	Present		4A
TS17: head mesenchyme	Present	Regionally restricted	4A	Expression is adjacent to the otocyst.

Structure	Level	Pattern	Image	Note
TS20: cochlea	Weak		4B
TS20: mandibular process	Present	Regionally restricted	4B	Expression was stronger at the dental lamina.
TS20: maxillary process	Present	Regionally restricted	4B	Expression was stronger at the dental lamina.

Structure	Level	Pattern	Image	Note
TS22: tooth epithelium	Strong		4C
TS22: oral epithelium	Trace		4C
TS22: tongue epithelium	Trace		4C

Structure	Level	Pattern	Image	Note
TS22: cochlea	Trace

Structure	Level	Pattern	Image	Note
TS24: enamel organ	Present		4D

Structure	Level	Pattern	Image	Note
TS24: enamel organ	Present		4E

Structure	Level	Pattern	Image	Note
TS26: molar epithelium	Present	Regionally restricted	4F	Expression was high in the second molar, but almost absent in the first molar epithelium. Only the lateral most portions of the first molar cusps expressed high levels.

Structure	Level	Pattern	Image	Note
TS26: molar epithelium	Present	Regionally restricted	4G	Only the lateral most portions of the first molar cusps expressed high levels.

Structure	Level	Pattern	Image	Note
TS26: embryo	Present	Regionally restricted		The authors reported that no fetal tissue expressed the gene other than those discussed above.