Redistribution of actin filaments labeled by microinjection of Qdot 655-Phalloidin.

At the onset of cytokinesis (10), Qdot-decorated actin filaments formed a pattern vaguely mirroring that of the spindle (10–13), reminiscent of the distribution of central spindle microtubules (as in Video S5). The Qdots gradually cleared from the non-equatorial regions and accumulated at the cleavage furrow (18 onward) as cytokinesis proceeded. Time in minutes. Bar, 10 µm.

在胞质分裂起始阶段（10），经量子点（Qdot）标记的肌动蛋白丝形成了一种与纺锤体（spindle）形态隐约相似的排布模式（10–13），其分布特征与中央纺锤体微管的排布相仿，如补充视频S5所示。随着胞质分裂的推进，量子点逐渐从非赤道区域消散，并在分裂沟处聚集（第18分钟起）。时间单位为分钟。比例尺为10 µm。