because hdl3 binding to these cells and hdl3-mediated cholesterol efflux from these cells do not saturate at similar free hdl3 concentrations , and because the cholesterol-induced increase in hdl3 binding is not accompanied by a similar increase in cholesterol efflux that is specific for hdl3 , we conclude that the described hdl3 binding sites on human fibroblasts do not mediate cholesterol efflux .
C0007634
cells
C0016030
fibroblasts