Used in biomedical research to measure the activity and expression levels of JAK2, a key signaling protein involved in immune responses and cell growth. Researchers apply this kit to study diseases like leukemia, myeloproliferative disorders, and autoimmune conditions such as rheumatoid arthritis. It enables accurate quantification of JAK2 phosphorylation and total protein in cell lysates, supporting drug development and evaluation of targeted therapies, especially JAK inhibitors. Commonly used in preclinical studies, clinical labs, and pharmaceutical research to assess treatment efficacy and signaling pathway modulation.