Flow cytometry is a fluorescence-based immunoassay that enables simultaneous measurement of multiple cellular characteristics, such as population counts and protein abundance, from individual cells suspended in a solution. It is a powerful tool that enables rapid, quantitative, and accurate measurement, and provides unparalleled insight into heterogeneous cell populations. We have compiled a collection of videos, application notes, eBooks, blogs, and more to help you start characterizing protein expression and intracellular signaling from cell populations.