Figure 2From: Acute fibrinous and organizing pneumonia associated with influenza A/H1N1 pneumonia after lung transplantation Postmortem histological findings in the lungs. a-c) AFOP: patchy involvment of lung parenchyma of the lower lobe with cubic intraalveolar fibrin deposits (so called fibrin balls) and formation of fresh fibroblast foci as sing for organizing pneumonia, hyaline membranes are absent (10×; H&E, PAS and EvG staining); d) unaffected lung parenchyma of the upper lobe (10×; H&E staining).Back to article page