1. A method of distinguishing live cells from dead cells in a population of cells, the method comprising: (a) providing one or more images of at least one cytoskeletal component in a population of cells; (b) automatically analyzing said one or more images to determine, for at least some cells in said population of cells, information about the cytoskeletal component; and (c) automatically using the information about the cytoskeletal component to classify said at least some cells as live or dead.