The eIF2alpha Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor eIF2alpha protein expression profile in cells. The kit can be used for measuring the relative amounts of eIF2alpha in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on eIF2alpha. Species Reactivity: human, mouse, rat. Range: > 5000 Cells. Sensitivity: >5000 cells