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CE has matured into a well-known and much used separation technique, with applications covering more or less all types of samples. EKC, which originally was developed for the separation of uncharged compounds, is still today under much development, with main focus on finding the perfect or ideal carriers (pseudo-stationary phase) for a broad range of analytes. In this review, the use of lipid dispersions as pseudostationary phases in EKC performed in capillaries and microchips, in addition to CE frontal analysis and partial filling EKC using lipid dispersions is discussed. Various types of lipid dispersions including liposomes, PEG-stabilized aggregates, proteoliposomes, lipid-based nanoparticles, and commercial lipid emulsions are described. The purpose of the review is to give the reader an overview of how EKC, CE frontal analysis, and partial filling EKC, have been applied to the study of interactions between analytes and lipid membranes. [ABSTRACT FROM AUTHOR]