Probe:	Cdon cDNA
Probe preparation:	Antisense labelled with digoxigenin RNA

Structure	Level	Pattern	Image	Note
TS15: neural tube	Present	Regionally restricted	1D	Expression was detected in the dorsal tip of the neural tube.
TS15: otocyst	Present	Regionally restricted	1D	Expression was detected on the dorsolateral side of the otocyst.

Structure	Level	Pattern	Image	Note
TS17: neural tube	Present	Regionally restricted	1I	Expression was detected in the dorsal tip of the neural tube.
TS17: otocyst	Present	Regionally restricted	1I	Expression was detected on the dorsolateral side of the otocyst.

Structure	Level	Pattern	Image	Note
TS20: inner ear epithelium	Present	Graded	2E	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: inner ear mesenchyme	Present	Graded	2E	Expression was detected in a gradient (stronger dorsally and weaker ventrally).

Structure	Level	Pattern	Image	Note
TS20: inner ear epithelium	Present	Graded	2K	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: inner ear mesenchyme	Present	Graded	2K	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: semicircular canal	Present	Regionally restricted	2K	Expression was detected in the cristae.

Structure	Level	Pattern	Image	Note
TS20: inner ear epithelium	Present	Graded	2Q	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: inner ear mesenchyme	Present	Graded	2Q	Expression was detected in a gradient (stronger dorsally and weaker ventrally).

Structure	Level	Pattern	Image	Note
TS20: inner ear epithelium	Present	Graded	2W	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: inner ear mesenchyme	Present	Graded	2W	Expression was detected in a gradient (stronger dorsally and weaker ventrally).
TS20: vestibulo-cochlear ganglion	Absent		2W

Structure	Level	Pattern	Image	Note
TS23: inner ear	Present	Regionally restricted	4I	Expression was not detected in the sensory organs, but was expressed in most of the non-sensory regions, with the exception of the endolymphatic duct and Reissner's membrane.

Structure	Level	Pattern	Image	Note
TS23: inner ear	Present	Regionally restricted	4J' , 4J	Expression was not detected in the sensory organs, but was expressed in most of the non-sensory regions, with the exception of the endolymphatic duct and Reissner's membrane.
TS23: cochlea	Present	Graded	4J	Graded expression pattern was stronger at the base and weaker toward the apex.

Structure	Level	Pattern	Image	Note
TS27: inner ear vestibular component	Present	Regionally restricted	5G' , 5G , 5G''	Expression was detected in the non-sensory regions of the vestibule.

Structure	Cell Type	Level	Pattern	Image	Note
TS27: external spiral sulcus		Present	Regionally restricted	5H'' , 5H , 5H'	Expression was detected in outer sulcus cells derived from the lesser epithelial ridge.
TS27: cochlea epithelium	strial marginal cell	Present		5H' , 5H , 5H''

Structure	Level	Pattern	Image	Note
TS23: middle ear	Present	Regionally restricted	6E	Expression was detected in middle ear joints and annular ligaments.
TS23: stapes	Present	Regionally restricted	6E	Expression was detected in stapedial footplate.

Structure	Level	Pattern	Image	Note
TS23: middle ear	Present	Regionally restricted	6K	Expression was detected in middle ear joints.