The MKK3 Colorimetric Cell-Based ELISA Kit is a convenient, lysate-free, high throughput and sensitive assay kit that can detect MKK3 protein expression profile in cells. The kit can be used for measuring the relative amounts of MKK3 in cultured cells as well as screening for the effects that variuos treatments, inhibitors (ie siRNA or chemicals), or activators have on MKK3.