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Biophysical Journal 16: 1287-1295 (1976)
© 1976 the Biophysical Society

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Lecithin translational diffusion studied by pulsed nuclear magnetic resonance.

G Lindblom, H Wennerström, G Arvidson and B Lindman

ABSTRACT

The translational diffusion coefficient of egg yolk and dilauroyl lecithin in optically isotropic phases containing sodium cholate has been measured using the pulsed NMR magnetic field gradient method. After a correction for geometrical factors the measured diffusion coefficient is found to agree well with previous determinations in phospholipid systems. The experimental data imply that the cubic mesophase of the lecithin-sodium cholate-water system contains continuous lipid aggregates. A possible model of the arrangement of the different amphiphile molecules in the cubic phase is discussed.






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Copyright © 1976 by the Biophysical Society.