The Ezrin (Phospho-Tyr478) Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor Ezrin (Phospho-Tyr478) protein expression profile in cells. The kit can be used for measuring the relative amounts of Ezrin (Phospho-Tyr478) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on Ezrin (Phospho-Tyr478).