when vldl- and ldl-depleted pig plasma were mixed with human lipoprotein-free plasma ( also a source of esterified cholesterol transfer activity ) and incubated for 24 h at 37 degrees c , there was an even greater reduction in the density of pig hdl , which now eluted in a position comparable to that of human hdl2 .
C0023825
vldl
C0023820
lipoprotein