Figure 1.

Time-lapse recording of an axon of an infected DRG sensory neuron. A laser scan of the entire field was completed every 0.184 s (i.e., ≈5.4 frames/s) by using an argon laser with a 488-nm excitation, beginning at 13 h.p.i. Every fifteenth frame over a 15.121-s interval is shown. Several GFP punctae are visible (numbered 1–8), two of which were moving (numbers 1 and 3). The neuronal cell body was immediately outside the field of view to the right; therefore, the moving punctae were undergoing anterograde transport. For a complete time-lapse recording, see Movie 1 in the supplemental data (www.pnas.org). (Bar = 5 μm.)