The following references are concerned with the pathways of the endocytic process and describe the use of iodixanol gradients for the purification of a variety of membrane compartments.

 References are primarily sorted into cell/tissue type, or occasionally a cell process: e.g. virus processing  Each cell/tissue type is sorted according to the principal analytical study. 

In each section or subsection references are listed alphabetically according to first author; a particular reference may appear in more than one subsection Note that the companion Mini-Review MS14 summarizes the available methods for fractionation of components of the endocytic system