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Time of Appearance of Lung Surfactant in the Fœtal Mouse

Naturevolume 193pages688689 (1962) | Download Citation



PATTLE1 first noted the stability of bubbles formed in the foam expressed from lungs of mature animals and the lack of stability in material from fœtal lungs. Clements2 emphasized the importance of a bubblestabilizing factor, that is, a surfactant, in the prevention of atelectasis. Lungs from human fœtuses of less than 1,000 gm. usually lack the surfactant characteristic of older fœtuses3; occasionally, lessmature fœtuses possess lung stability4.

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  1. Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, 5, Maryland



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