Fig. 7. Dynein traffic at the microtubule ends. (a) Dynein traffic near the MTOC (see Movie 4 and Movie 5 at jcs.biologists.org ). Arrows along the microtubule tracks indicate movements into and out of the MTOC. Back-to-back arrows represent bidirectional movement. In this example, three in, three out and two bidirectional movements were observed during an 8.785 second period. (b) Dynein traffic at the microtubule plus end (Movie 6 at jcs.biologists.org ). The microtubule track is partially highlighted, with the plus end resembling a comet-tail. Arrows indicate movements into and out of the microtubule plus end. An example of this structure can also be observed in Fig. 3c (arrowhead). Scale bars, 5 µm.

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