Figure 5 Cholesterol carried as micelles or non‐micellar particles, including vesicles, in lumenal samples that were mixed with either 0.9% saline or 10 mM glycocholic acid (GCA), and the resultant particles separated by size using the Superose 4B gel filtration columns. Cholesterol concentrations in the fractions from the gel exclusion chromatography were measured by gas chromatography in fractions eluted with 0.9% saline (A) or 10 mM GCA (B).