Fig. 9. F-actin is cleared by astral microtubules in the absence of the cytokeratin network. Images of living extracts showing microtubules (MTs) and F-actin (Actin) with intact (Control) and disassembled (C11) cytokeratin networks. In both the presence and absence of cytokeratin filaments, the microtubules clear F-actin from around asters, indicating that cytokeratin is not required for the microtubule-actin interactions involved in clearing.