Fig. 10. AprA helps to prevent the formation of multinucleate cells. (Top row) Cells growing in shaking culture were fixed with ethanol and stained with DAPI to show nuclear DNA (the background staining in the cells is mitochondrial DNA). The bottom row shows phase contrast images of the same cells. Multinucleate cells (white arrows) are present in the aprA^- population. Scale bar: 20 µm.