Cellular assays have always been a powerful tool in the research lab. They are incredibly versatile, and can be designed to measure virtually any cellular or biochemical function. Sensitive detection of fluorescent probes aid in evaluating cell signalling and death pathways, which is useful for the rapid quantification of cell viability. Cellular assays can be used to measure the effects of different treatments on cell viability and to evaluate toxic effects mediated through a variety of mechanisms.