Fig. 9.

Immunofluorescence staining of dense bodies in frog hair cells. A, Maximum fluorescence at each pixel location in all 25 confocal sections through an anti-CtBP-labeled hair cell. Fluorescent spots representing dense bodies are mostly found in the basal half of the cell. The nucleus did not stain prominently in hair cells. B, Bottom-most confocal section of the cell.C, D, Two sections taken near the middle of the cell. Note that CtBP spots in middle sections are found on the cell periphery, as expected for synaptic ribbons.