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Top left. Most peripherin(+) neurons are also SMI-32(+). Photomicrographs show a culture double-stained for peripherin and SMI-32 under visible light (A, peripherin staining) and under fluorescence microscopy (B, SMI-32 labeling). A majority of peripherin(+) neurons were found to express SMI-32 immunoreactivity. Other double-labeling studies showed most ACh- or CGRP-immunoreactive neurons to be SMI-32(+) (see Results). Scale bar, 50 μm.
