In Figures 4a and 4b ) at the final concentration was varied as 1, 1.5, and 2. When the 𝑐+ , at the final concentration was fixed at 1.5, the 𝑐 ' "# was varied as 1.25×10 -2 , 2.5×10 -2 , and 5.0×10 - 2 U/µL. To calculate the division rate, rdiv, we binarized the fluorescent images and analyzed them using Fiji 62 . The experimental details are described in Supplemental Methods S2.