In contrast, quercetin supplementation significantly decreased the infiltration of inflammatory cells as well as the levels of TNF-α and IL-1β in the bronchoalveolar lavage fluid and plasma of gerbils exposed to benzo[a]pyrene (BaP) or BaP+ β-carotene in A549 adenocarcinoma alveolar basal epithelial cells [191]. The gene discussed is IL1B; the disease is adenocarcinoma.