The TGF ?3 Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can monitor TGF ?3 protein expression profile in cells. The kit can be used for measuring the relative amounts of TGF ?3 in cultured cells as well as screening for the effects that various treatments, inhibitors (ie. siRNA or chemicals), or activators have on TGF ?3.