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Fig. 3. CaP axons incorporate initially aneural AChR clusters into NMJs. (A,B)
HB9:mGFP fish were counterstained with BTX (red) and imaged every 2 minutes
for 2 hours starting at 17 hpf (0 hours). In both A and B, AChR clusters were
present before filopodia approached them. The axon in B initially pioneered an
incorrect path toward a group of clusters caudal to the end-plate band. Later,
it retracted and then took a path down the central band. Dorsal is down and
rostral to left in all panels. Scale bar: 10 µm.