Figure 3.

Ncad-GFP labels discrete-punctate transport organelles. Shown are images taken from an in vivo time-lapse sequence, revealing the movement of discrete-punctate transport organelles in a Rohon-Beard axon. Axons exhibit both stable and highly dynamic fluorescent puncta, with very little background staining of the axons. The discrete-punctate transport organelles move in either the anterograde or retrograde directions and reach velocities of up to 34 μm/min. The arrowheads follow one such transport organelle. Scale bar, 10 μm.