Fig. 4.

Opposite correlations between order and short MTs for crossing-only severing and minus end treadmilling. Increasing $v^t$ resulted in increased $S_2$ and increased the fraction of short MTs ($<$1.6 $\mu$m) with and without crossing-only severing (three curves as indicated in legend). For any given value of $v^t$, increasing $r_x$ resulted in an increase of the short MTs but a decrease of $S_2$. The $v^t$ ranges from 0.01 to 0.06 $\mu$m/s, and identical values of $v^t$ are connected by gray lines (SI Appendix, Measuring Length Distributions of Discordant MT Populations).