The Myosin regulatory light chain 2 (Phospho-Ser18) Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor Myosin regulatory light chain 2 (Phospho-Ser18) protein expression profile in cells. The kit can be used for measuring the relative amounts of Myosin regulatory light chain 2 (Phospho-Ser18) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on Myosin regulatory light chain 2 (Phospho-Ser18) .