upon centrifugation of capacitated spermatozoa and application of the supernatant to density-gradient ultracentrifugation for lipoprotein analysis , both [ 3h ] cholesterol and [ 3h ] cholesteryl sulfate were found to be carried by very-low-density lipoproteins ( vldl ) , low-density lipoproteins ( ldl ) , high-density lipoproteins ( hdl ) , as well as the albumin fraction ( d greater than 1.21 ) in serum .
C0023820
lipoprotein
C0023825
very-low-density