FIG 13.

Hes1 promoter-responsive NotchR signaling at the NMJ. The images are confocal images of a neuromuscular junction on a muscle fiber electroporated with the Hes1Promoter-GFP plasmid and of a nonelectroporated control muscle fiber. Six days after electroporation, sternomastoid muscles were labeled with a saturating dose of α bungarotoxin (to label AChRs) (red) and with DAPI (to label nuclei) (blue). Synapses on electroporated (GFP) (green) and nonelectroporated muscle fibers from the same sternomastoid muscle were imaged by confocal microscopy. Bar, 15 μm.