although the direct conversion of very low density lipoproteins ( vldl ) into low density ( ldl ) and high density ( hdl ) lipoproteins only requires lipoprotein lipase ( lpl ) as a catalyst and albumin as the fatty acid acceptor , the in vitro-formed ldl and hdl differ chemically from their native counterparts .
C0023825
very low density lipoproteins
C0023820
lipoproteins