All known living organisms are composed of cells. ImarisCell now allows you to use this natural and universal unit when doing your image analysis work. ImarisCell can identify individual cells in addition to their nuclei and multiple populations of intracellular vesicular objects. Furthermore, you now can use cell membranes to segment cells present in your image. With ImarisCell, the fundamental unit of analysis has changed from a single image to clusters of cells, individual cells, or components of cells. This evolution prevents unnecessary generalizations caused by the limitations of single image analysis and facilitates specificity at the biological level of detail dictated by your research.