Antibody:	anti-SEPT7/CDC10
Detection system:	Secondary antibody coupled to Alexa Fluor 488

Structure	Cell Type	Level	Pattern	Image	Note
TS28: organ of Corti	external pillar cell of cochlea	Strong		5a , 5b
TS28: organ of Corti	internal pillar cell of cochlea	Strong		5a , 5b
TS28: organ of Corti	Deiter's cell	Present	Regionally restricted	5b , 5a	Expression in filament-like structure between reticular lamina and basilar membrane lateral to outer pillar cells - co-expressed with F-actin.
TS28: organ of Corti	cochlea auditory hair cell	Weak		5b , 5a
TS28: organ of Corti	Hensen cell	Weak		5b , 5a
TS28: organ of Corti	organ of Corti supporting cell	Weak		5b , 5a
TS28: external spiral sulcus		Weak	Regionally restricted	5b , 5a	Weaker expression in inner and outer sulcus cells.
TS28: internal spiral sulcus		Weak	Regionally restricted	5b , 5a	Weaker expression in inner and outer sulcus cells.

Structure	Level	Pattern	Image	Note
TS28: organ of Corti	Present	Regionally restricted	5f , 5d	Co-expression with Tubb3 in punctate structures but not in filament-like structure.

Structure	Level	Pattern	Image	Note
TS28: organ of Corti	Present	Regionally restricted	5g inset , 5i inset` , 5g , 5i	Co-expression with synaptophysin in punctate structure below inner hair cells and around basal portion of outer hair cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: organ of Corti	Deiter's cell	Present	Regionally restricted	5l , 5j	Expression in filament-like structure co-expressed with acetylated alpha tubulin.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: organ of Corti	Deiter's cell	Present	Regionally restricted	6c , 6f	Expression in filament-like structures originating from basilar membrane and extending to apices of outer hair cells, running outside of outer hair cells. Expression in phalangeal process of Deiters' cells.

Structure	Cell Type	Level	Pattern	Image	Note
TS28: organ of Corti	Deiter's cell	Present		8f , 8d	Expression pattern similar to that of wild type cochlea in pillar cells, Deiters' cells and presynaptic vesicles.
TS28: organ of Corti	pillar cell	Present		8f , 8d	Expression pattern similar to that of wild type cochlea in pillar cells, Deiters' cells and presynaptic vesicles.

Structure	Level	Pattern	Image	Note
TS21: cochlear duct epithelium	Present	Widespread	10a , 10c	Expression in most epithelial cells of cochlea duct.

Structure	Level	Pattern	Image	Note
TS23: cochlear duct epithelium	Strong	Widespread	10d , 10f	Similar expression maintained until E15 with more intense expression level.

Structure	Cell Type	Level	Pattern	Image	Note
TS27: organ of Corti	pillar cell	Very strong	Regionally restricted	10i , 10g	Intense expression in cytoplasm of pillar cells.
TS27: organ of Corti	Deiter's cell	Present		10g , 10i
TS27: organ of Corti	Hensen cell	Present		10g , 10i
TS27: cochlea	Claudius cell	Present		10g , 10i

Structure	Cell Type	Level	Pattern	Image	Note
TS27: organ of Corti	pillar cell	Strong	Regionally restricted	10j , 10l	Stronger expression at apical portion of pillar cells through P2 and P3.

Structure	Cell Type	Level	Pattern	Image	Note
TS27: organ of Corti	Deiter's cell	Strong		10m , 10o	Stronger expression than in other epithelial cells in pillar cells, Deiters' cells, Hensen't cells and Claudius cells.
TS27: organ of Corti	Hensen cell	Strong		10m , 10o	Stronger expression than in other epithelial cells in pillar cells, Deiters' cells, Hensen't cells and Claudius cells.
TS27: organ of Corti	pillar cell	Strong		10m , 10o	Stronger expression than in other epithelial cells in pillar cells, Deiters' cells, Hensen't cells and Claudius cells.
TS27: cochlea	Claudius cell	Strong		10m , 10o

Structure	Level	Pattern	Image	Note
TS28: cochlea	Present	Regionally restricted	10r , 10p	Expression pattern similar to that in adult cochlea. No expression in presynaptic vesicles.