Immunohistochemistry of the mouse cochlea.

<p><b>A</b>, Bdp1 protein expression in the cochlea at postnatal day 5. Bdp1 shows expression in the stria vascularis (red arrow), Reissner's membrane (red arrowhead), basilar membrane (black arrowhead), and spiral ligament (black arrow). <b>B–D</b>, Bdp1, Kcnj10 and laminin expression in the stria vascularis. Our immunohistochemistry detected Bdp1 protein in the proximity of blood vessels (example of the same blood vessel in adjacent sections is indicated with an arrow in B, C, D). We used Kcnj10 as a marker of intermediate cells (C) and laminin as a marker of the basal lamina surrounding blood vessels (D) in the stria vascularis in the sections shown in A. The expression pattern suggests that Bdp1 is expressed in endothelial cells of the stria vascularis. Scale bars: A: 50 µm; B–D: 10 µm. sv: stria vascularis.