to investigate the interaction of lipoproteins with semipermeable membranes , solutions of low density lipoproteins ( ldl ) , very low density lipoproteins ( vldl ) , mixtures of the two , and diluted , normal , and hyperlipidemic serum were ultrafiltered through a synthetic membrane ( 500 a nominal pore diameter ) using a stirred laboratory ultrafiltration cell .
C0023820
lipoproteins
C0023825
very low density lipoproteins