thus , at a given hdl concentration , the unidirectional influx and efflux of cholesterol mass ( fi , fe ) should be proportional to the cholesterol content of hdl and cells , respectively , and net efflux of cholesterol mass ( fe-fi greater than 0 ) should occur when either cells are enriched with cholesterol or hdl is depleted of cholesterol .
C0023822
cholesterol
C0008377
cholesterol