Used in biomedical research to detect and quantify extracellular signal-regulated kinase (ERK) activity in mouse samples. Helps study cell signaling pathways involved in cell growth, differentiation, and apoptosis. Commonly applied in cancer research, neuroscience, and immunology to evaluate the activation state of ERK in response to stimuli such as growth factors, drugs, or disease conditions. Enables high-throughput analysis in preclinical studies using mouse models.