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Lung - Pigment - Gallery

Image of alveolar pigment in the lung from a female Harlan Sprague-Dawley rat in a chronic study
Lung, Alveolus - Pigment in a female Harlan Sprague-Dawley rat from a chronic study. The pigment is most likely hemosiderin and is contained within macrophages.
Image of alveolar pigment in the lung from a male F344/N rat in a chronic study
Lung - Pigment in a male F344/N rat from a chronic study. The golden brown pigment is most likely hemosiderin secondary to hemorrhage associated with acute inflammation.
NTP is located at the National Institute of Environmental Health Sciences, part of the National Institutes of Health.