Fatty Change of the Granular Pneumocyte

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Science  14 Jan 1966:
Vol. 151, Issue 3707, pp. 213-214
DOI: 10.1126/science.151.3707.213


Fat vacuoles develop in the granular pneumocytes of guinea pigs exposed to severe hypoxia in low-pressure chambers. The ostiniophilic lamellar bodies are apparently reduced in size and decreased in number. The fatty change of the granular pneumocyte may represent a metabolic alteration and interfere with the production of surfactant. This hypoxic lesion of the pneumocyte may be a significant factor in high-altitude pulmonary insufficiency.