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