Antibody:

Anti-AQP3

Structure	Cell Type	Level	Pattern	Image	Note
TS28: spiral ligament		Strong	Regionally restricted	4B , 4A	Strong immunostaining was observed in a portion of the spiral ligament near the area where the basilar membrane anchors.
TS28: spiral limbus	otic fibrocyte	Present	Non-Uniform	4C , 4A	Immunoreactive staining was especially strong for cells bordering the inner spiral tunnel. Staining was consistent with a membrane localization.
TS28: capillary		Weak	Regionally restricted	4A	Weak immunoreactivity was seen at capillary walls of the midmodiolar region and spiral ligament.
TS28: stria vascularis		Absent		4A

Structure	Cell Type	Level	Pattern	Image	Note
TS28: saccule	otic fibrocyte	Present		5A , 5B	Immunoreactivity was observed at sub-epithelial connective tissue fibrocytes in the saccule.
TS28: ductus reuniens		Present		5C , 5A
TS28: utricle	otic fibrocyte	Absent		5A
TS28: saccule		Weak	Regionally restricted	5A	Very weak staining was noted in both saccular and utricular walls.
TS28: utricle		Weak	Regionally restricted	5A	Very weak staining was noted in both saccular and utricular walls.

Structure	Level	Pattern	Image	Note
TS28: endolymphatic sac	Present	Non-Uniform	6	Expression was detected in the rugose portion, but only weakly in the intradural portion.