Used to measure phosphorylated ERK (extracellular signal-regulated kinase) levels in rabbit cell or tissue samples. This kit is widely applied in research settings to study cellular signaling pathways, especially those involving mitogen-activated protein kinases (MAPK). It helps assess activation states of ERK in response to growth factors, hormones, or stress stimuli. Commonly used in studies of cell proliferation, differentiation, and apoptosis. Supports drug development and disease mechanism research, particularly in cancer, neuroscience, and inflammatory diseases where ERK signaling is dysregulated. Provides a quantitative, high-throughput method for evaluating pathway activity without requiring radioactive labeling.