Figure 7.

Immunogold labeling of type V cells. (A) Labeling for caldesmon (CALD) is weak and present mainly in the cytoplasm (arrows). (B) Labeling for AQP1 is weak to moderate and primarily on the membranes of fine processes near the cell body (arrowheads) and wider processes that extend into the scala vestibuli (sv) (inset). (C) Labeling for S-100 is moderate to strong in the cytoplasm of the cell body and fine processes, sparing the mitochondria (inset). (D) Labeling for α1Na,K-ATPase is moderate and primarily on the plasma membrane in both fine processes and the wider processes extending into scala vestibuli (sv) (inset). Scale bars: A–C = 2 µm; B inset, D, and D inset = 1 µm; C inset = 0.25 µm.