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PFM of FtsZ in cross section. (A) Cells with FtsZ-YFP are made to stand vertically with respect to the microscope stage. The emitted light is collected from the Z-ring. (B) Images obtained when the polarizer is oriented in the x and y directions. Plot is based on images of 38 cells. Arrows denote scale bars of 1 μm. (C) The polarization anisotropy as a function of the angle around the ring in the xy plane. Error bars correspond to the mean ± SE. To see this figure in color, go online.
