Fig. 5. Time-lapse series of phase and fluorescence micrographs of mitotic HeLa cells expressing GFP or GFP fusions of the IgG domain, IgG domain plus five DXRs or kinase-dead MLCK. Scale bar, 10 µm. (A) A cell expressing GFP. (B,C) Cells expressing the IgG domain plus five DXRs. (D,E) Cells expressing the IgG domain. Arrowheads indicate an actively growing lamellipodia of a cell that exits M phase. (F) Cell expressing the kinase-dead MLCK. Arrows indicate blebs that form in arrested cells.