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. 2023 Oct 4;14:1216278. doi: 10.3389/fimmu.2023.1216278

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Copyright © 2023 Khan, Single, Simmons, Athar, Liu, Bodduluri, Benson, Goliwas and Deshane

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Changes in air space in central and peripheral lung samples from COVID-19 and control autopsies, and convalescent lung samples. (A) Comparison of lung histologic cross-sections from control and COVID-19 autopsy; 40x magnification with 200x magnification inset. (B–D) Representative photomicrographs of hematoxylin & eosin-stained lung tissue from COVID-19 autopsy (B), control autopsy (C), and convalescent lung tissue (D). 200x magnification (scale bar: 200 microns). Filled arrow: metaplasia of type II pneumocytes; dashed arrow: hyperplasia of type II pneumocytes.