These files are the primary time lapse imaging data for the paper: Heather M. Meyer, Jose Teles, Pau Formosa-Jordan, Yassin Refahi, Rita San-Bento, Gwyneth Ingram, Henrik Jonsnsson, James C. W. Locke, and Adrienne H. K. Roeder. Fluctuations of the transcription factor ATML1 generate the pattern of giant cells in the Arabidopsis sepal. The files provided (with the exception of the files labeled BOA) are the primary cropped images from the microscope, that have not been processed. They are saved as 3D .tif files. These images can be analyzed by segmentation of nuclei (e.g. NuclearDetector3D in Bisque), tracking of nuclei over time (e.g. NuclearTracker in Bisque) and quantification of ATML1 fluorescence in each nucleus over time.