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Periodic localization of Z rings in anucleate segments of long dnaA46 filaments. WM1270 cells shifted to 42°C for 4 h in LB plus thymine were fixed and immunostained for FtsZ. The left panel shows FtsZ staining in green, and the right panel shows nucleoids stained with DAPI, pseudocolored red. The middle panel is a digital overlay of the left and right panels. Bar, 5 μm.
