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. 2015 Aug 3;210(3):401–417. doi: 10.1083/jcb.201506110

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© 2015 Ganguly et al.

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Figure 2. — Quantitative analyses of F-actin hotspots and trails. (A) Mean lifetime of F-actin hotspots was 80.40 ± 3.95 s (n = 575 events from 28 axons). (B) Mean number of F-actin trails (every 10 min of imaging) was 20.35 ± 1.98 for anterograde events and 14.92 ± 1.35 for retrograde events (992 events from 28 axons). (C) Mean total lengths of F-actin polymers were 8.85 ± 0.18 µm (n = 573 events) and 8.87 ± 0.22 µm (n = 419 events) for anterograde and retrograde trails, respectively. (D) Mean elongation rates of F-actin trails were 0.99 ± 0.01 µm/s in both directions. (E) On average, 80.59 ± 2.23% F-actin trails emerged from hotspots (n = 36 axons). (F) On average, 63.00 ± 2.80% F-actin trails collapsed into hotspots (n = 36 axons). Arrowheads and asterisks in E and F represent initiation/termination of actin trails and position of hotspots, respectively. All values represent means ± SEM. Antero, anterograde; Retro, retrograde.