Time lapse of myosin GFP (left, imaged by TIRF microscopy) and mCherry tubulin (middle, imaged by epifluorescence; the spindle is close to the coverslip surface in this cell) during anaphase in a Drosophila S2 cell. An overlay of the images is shown on the right. This video corresponds to the image in Fig. 1 and video 1 in J Cell Bio 186:727-738, 2009. Total internal reflection microscopy was performed using a microscope (Perfect-focus TE2000; Nikon) with a 100×, 1.45 NA objective (Nikon) and illumination from either a 488-nm argon laser (100 mW) or a 491-nm solid-state laser (100 mW) and a 561-nm solid-state laser (50 mW). For dual-color TIRF microscopy, we used a triplepass dichroic filter (z491/561/633rpc) and changed the emission filter (ET525/50 or ET595/50; both from Chroma Technology Corp.) with a filter wheel placed before the camera. In some cases, an excitation notch filter was used in the filter cube (NF01-405/488/561/635; Semrock, Inc.). Images were typically captured every 2-3 s with a 50-200ms exposure with an EM charge-coupled device camera (iXon; Andor Technology). The microscope was controlled and images were acquired using open source MicroManager software (http://www.micro-manager.org).
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