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Figure 4 | Respiratory Research

Figure 4

From: Iron homeostasis and oxidative stress in idiopathic pulmonary alveolar proteinosis: a case-control study

Figure 4

Stain of BAL cell pellets for iron (top) and ferritin (bottom) in healthy subjects (left) and patients with PAP (right). Sideromacrophages (stained blue) were rare in normals (top left) but increased in number among cells from PAP patients (top right). Similarly, those cells staining positively for ferritin (stained brown) were few in number in normals (bottom left) but were numerous in the cohort with PAP (bottom right). Extracellular ferritin appeared to be present. Magnification is approximately 100×.

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