Used in biomedical research to measure p38 mitogen-activated protein kinase (p38MAPK) activity in rat samples. This kit helps study cellular responses to stress, inflammation, and cytokine production. Commonly applied in drug development and toxicology studies to evaluate how compounds affect signaling pathways involved in diseases like arthritis, neurodegenerative disorders, and cardiovascular conditions. Enables high-throughput analysis in cell lysates, allowing researchers to quantify phosphorylated p38 levels as an indicator of pathway activation.