Directional Transport of a Bead Bound to Lamellipodial Surface Is Driven by Actin Polymerization

Figure 3

(a) Day-to-day variation of values of untreated cells. Total 160 measurements were carried out over 20 different days (on day 1 a single measurement was carried out). The average ± standard deviation of all the data was  nm/s. (b) Distribution of the values shown in (a); majority of the values are <100 nm/s. (c) Distribution of values; the distribution is strongly skewed toward left and is quite broad. (d) log₁₀(MSD) versus log₁₀(t) plot of an untreated cell (sample 1, closed symbols) and that of another untreated cell (sample 2, open symbols). The continuous straight line has a slope = 1 and the dashed straight line has a slope = 2, each of which represents a diffusion and a unidirectional movement with a constant velocity.

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(b)

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