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. 2023 Mar 21;23:172. doi: 10.1186/s12879-023-08095-1

Fig. 4.

Fig. 4

Hematoxylin–eosin and acid-fast staining of the biopsy specimen. A Hematoxylin–eosin staining revealed chronic active mucositis with multinuclear giant cell reaction (arrow) in middle of the esophagus. B Several acid-fast bacilli (arrowheads) were found in the biopsy specimen with acid-fast staining