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. 2020 Apr 30;477(5):743–748. doi: 10.1007/s00428-020-02829-1

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© Springer-Verlag GmbH Germany, part of Springer Nature 2020

This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic.

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Fig. 3 — a (× 40) Pneumocyte desquamation (arrow) and reactive hyperplasia with focal nuclear inclusion (asterisk). Abundant hemosiderin pigment is present within alveolar macrophages. b (× 40) Diffuse pneumocyte loss (arrows) and alveolar septal thickening. c (× 40) Inflammatory infiltrates and fibrous plugs as those observed in organizing pneumonia (arrow). d (× 40) Neutrophilic vascular margination and edema of the alveolar wall. e Diffuse interstitial lymphocyte infiltrate and intra-alveolar macrophages (H&E). f (× 20) CD8 immunostaining shows a prevalence of cytotoxic T lymphocytes (immunoperoxidase stain)