The Histone H2B Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor Histone H2B protein expression profile in cells. The kit can be used for measuring the relative amounts of Histone H2B in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on Histone H2B.