steady-state fluorescence polarization ( p ) measurements , using the probe 1,6-diphenyl-1,3,5-hexatriene , in a large variety of well-defined liposomes at 25 degrees c allowed a quantitative description of the contributions of cholesterol , sphingomyelin , and ( un ) saturation of fatty acyl groups in the various phospholipids to the structural order ( or the mutual affinity ) of membrane lipids .
C0031676
phospholipids
C0025249
membrane lipids