Figure 3. Andrographolide suppressed mRNA levels of inflammatory cytokines in lung of mice with OVA-induced asthma.

RNA of lung tissue from the mice was extracted. The mRNA expression of TNF-α, IL-1β, IL-17, IL-6, IL-4, IL-5 was examined by real-time PCR. Values were shown as the means ± SEM of eight mice. *P < 0.05, **P < 0.01 vs. mice treated with OVA alone.