"Cell division underlies the growth and development of all living organisms. Following partitioning of bulk cytoplasmic contents by cleavage furrow ingression, dividing animal cells split by a distinct process termed abscission. Whereas a number of factors required for abscission have been identified in previous studies, it is not known by which mechanism they mediate fission of the intercellular bridge between the nascent sister cells. Here, we will establish correlative workflows of time-lapse imaging, super resolution fluorescence microscopy, electron tomography, and electrophysiological assays to bridge spatial and temporal resolution gaps in the study of abscission. We will further develop computational tools for image-based RNAi screening. With this, we aim to:1) elucidate how membrane and cytoskeletal dynamics coordinately split the intercellular bridge;2) uncover the signaling pathways controlling abscission timing.Failure in abscission can lead to aneuploidy and cancer. Elucidating its mechanism and temporal control is therefore of general biological and medical relevance. The computational and correlative imaging methods developed in this project will further provide the research community new possibilities for mechanistic studies in intact cells."