Flow cytometry assays to assess the proliferative activity of cells are commonly used for monitoring the health and growth rate of cells. In this type of assay, a cell tracking dye, such as CFSE, is incorporated into the cells. With each round of cell division, the relative fluorescent intensity of the dye decreases by half. Other software packages offer limited functionality to model the data or require you to use a separate software package completely. With FCS Express full descriptive statistics for modeling and per generation calculations along with the ability to fully format your plots will have you ready for publication in no time in one analysis package.