the idl-1 and idl-2 subspecies appeared to represent two distributions of lipoproteins overlapping in size ( particle diameter 280-300 a and 268-284 a , respectively ) and buoyant density ( d = 1.008-1.022 g/ml and d = 1.013-1.028 g/ml , respectively ) .
C0065063
idl
C0023820
lipoproteins