MIP-1β is enriched in healthy gingivae, yet IL-9 is enriched in gingivitis and negatively correlated with MIP-1β (Fig. 3a): in fact, IL-9 is significantly downregulated at day 3 and day 7 and upregulated at day 28 (versus day 0; Fig. 2d). The gene discussed is CCL4; the disease is gingivitis.