CFTR co-localizes with a synaptic vesicle protein.

<p><b>A</b>, Polyclonal anti-CFTR antibody labels retinal amacrine cell bodies and processes. Arrows indicate a region where multiple AC processes are in contact, possibly a synaptic region (arrows). <b>B</b>, Anti-SV2 labeling is found throughout the cells but is especially strong in regions of process contact (arrows). <b>C</b>, Merged images of CFTR and SV2 labeling shows strong co-localization in the region of process contact. Scale bars are 10 μm.