MKI67 and infectious otitis media: Overall, the number of Ki67 positive cells (stained brown) in duodenum, jejunum, ileum, and colon of AOM/DSS mice injected with HA‐Dox were markedly lower compared to the intestinal tissues in AOM/DSS mice injected with either saline and Dox, although the Ki67 expression levels in AOM/DSS mice injected with Dox was lower than AOM/DSS injected with saline.