in order to investigate the structure and stability of cholesterol-enriched dispersions of phosphatidylcholine ( pc ) , cholesterol/dipalmitoyl phosphatidylcholine ( dppc ) mixtures with molar ratios of 4 +/- 0.5/1 to 1/1 were dispersed in water by sonication .
C1959616
phosphatidylcholine
C0000039
dipalmitoyl