Used to measure ERK (extracellular signal-regulated kinase) activity in human cell or tissue samples. This kit is widely applied in research settings to study cell signaling pathways involved in cell growth, differentiation, and apoptosis. It helps in cancer research by evaluating the activation status of ERK in tumor cells, especially in studies related to targeted therapies and drug responses. Also used in pharmacological studies to assess the effectiveness of kinase inhibitors. The assay enables high-throughput screening and quantitative analysis, making it valuable in both academic and drug development laboratories.