The SOX-9 (Phospho-Ser181) Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor SOX-9 (Phospho-Ser181) protein expression profile in cells. The kit can be used for measuring the relative amounts of SOX-9 (Phospho-Ser181) in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on SOX-9 (Phospho-Ser181). Species Reactivity: human, mouse. Range: > 5000 Cells. Sensitivity: >5000 cells