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Figure 2 Model for HDL metabolism in the two-steps reverse cholesterol transport process. The first step is the efflux of cellular free cholesterol to HDL, which is an antiatherogenic step. The second step is the transfer of cholesterol ester from HDL to apo B-containing lipoproteins (LDL and VLDL) via CETP, which may be proatherogenic and is what FERHDL measures.
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