Western blot analysis was conducted to evaluate the expression levels of apoptosis-related proteins and proteins within the JAK2/STAT3 signaling pathway in tumor tissues harvested from U2932 tumor-bearing nude mice following a 14-day treatment with luteolin at doses of 12.5 mg/kg, 25 mg/kg, and 50 mg/kg. The gene discussed is JAK2; the disease is neoplasm.