Phase and wide-field epifluorescence imaging of live (dissociated or ganglion explants) or fixed cells was performed on Zeiss Axiovert inverted microscopes equipped with a heated stage for live-cell imaging (Ketschek and Gallo, 2010 (link)). For all live-cell imaging, cultures are allowed to equilibrate for 15 min on the heated stage prior to imaging. An Orca ER camera (Hamamatsu) was used for all wide-field image acquisition.