Thresholded timelapse video of label-free A549 cells imaged using the Phase Focus Virtual Lens®

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Phase Focus

Thresholded timelapse video of A549 cells imaged using the Phasefocus Virtual Lens® (http://www.phasefocus.com) at 37°C for 20 hours, illustrating the quantitative nature of our images. Courtesy of Peter O'Toole, Joanne Marrison, Lotta Räty, Poppy Marriott and Ian Morrison, Imaging and Cytometry, Department of Biology, University of York, Hesligton, York, Y010 5DD, UK