Table 3.

Basement membrane (BM) protein localization in human vestibular endorgans.

Protein	Stroma	Sensory epithelia	Transition epithelia
Collagen IVα2/	PV BM+++ PN BMs++	BM+++	BM+++
Nidogen/	PV BM+++ PN BM+++	BM+++	BM+++
Tenascin-C/	PV BM − PN BM−	Epithelial BM: CA central zone+++ CA peripheral PS zone − MU and MS BMs ++ Type I-Like calyces (CA, MU and MS) +++	BM
Laminin-β-2/	PV BM++ PN BM++	BM++	BM+++
αDystroglycan	PV BM+ PN BM+	BM+++	BM−

Legend: CA cristae ampullares; MU: macula utricle, MS macula saccule; PS planum semilunatum; PV: perivascular; PN: perineural

−= not detected

+= faintly immunoreactive

++= immunoreactive

+++= highly immunoreactive