The phospholipidic classes of the natural pulmonary surfactant Curosurf were separated by bidimensional TLC and isolated. Quantitative analysis of each class was made by colorimetric determination of phosphorus. FD/MS and NH3-CI/MS were used to identify individual components. GC was used for qualitative/quantitative analysis of fatty acid moieties as methyl esters, using internal standards, by comparison with authentic samples.
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