Lung Surfactants, Counterions, and Hysteresis

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Science  18 Jun 1965:
Vol. 148, Issue 3677, pp. 1607-1609
DOI: 10.1126/science.148.3677.1607


The wide hysteresis and low surface tension of lung extracts, as studied on a modified Langmuir-Wilhelmy surface balance, are dependent on the presence of subphase electrolytes. A possible mechanism for the hysteresis and its importance to the exchange of surfactants between the alveolar cell and the alveolar surface film are discussed.