we have previously shown that in hep g2 cells and human hepatocytes , as compared with fibroblasts , the low-density lipoprotein ( ldl ) receptor activity is only weakly down-regulated after incubation of the cells with ldl , whereas incubation with high-density lipoproteins ( hdl ) of density 1.16-1.20 g/ml ( heavy hdl ) strongly increased the ldl-receptor activity .
C0016030
fibroblasts
C0007634
cells