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. 2020 May 7;48:107233. doi: 10.1016/j.carpath.2020.107233

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Fig. 3 — Houston Case One (HC1). Electron micrographs. (A) Alveolar capillaries contain erythrocytes and neutrophils identified by the presence of characteristic granules (red star). (B) Higher magnification view of cellular 500 nanometer particles which likely represent swollen lysosomes (azurophil granules).