Figure 11:

Histologic image (hematoxylin and eosin stain, 100× magnification) shows diffuse pulmonary fibrosis in an explanted lung 6 months after acute COVID-19. There is deposition of paucicellular, eosinophilic material within the pulmonary interstitium. Some residual alveolar spaces are present but appear compressed. These findings have been previously described in explanted lungs and likely represent the fibrotic phase of diffuse alveolar damage.