We also counted Ki-67-stained cells and PCNA-stained cells and found a larger number of positive cells in AOM/DSS + Vehicle adenomas than in AOM/DSS + Lb. plantarum AY01 adenomas (Figure 5), suggesting that Lb. plantarum AY01 culture supernatant inhibits the proliferation of tumor cells. The gene discussed is PCNA; the disease is infectious otitis media.