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Histologic lung findings at autopsy and SARS immunohistochemical staining in lungs from patients 6 and 7 with COVID-19 (SARS-CoV-2 infection).
Histologic examination of the lungs from patients 6 (a, b), and 7 (c, d) showed organizing diffuse alveolar damage (DAD) (a, c) without prominent hyaline membrane formation that would correspond to acute-phase DAD. SARS immunohistochemistry (IHC) was entirely negative in lung sections from patient 6 (b) and 7 (d).
