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The molecular weights of porcine plasma high density (1.1 to 1.2 g per ml) lipoprotein and its subunits were determined by sedimentation equilibrium.High density lipoprotein has a molecular weight of 210,000, of which 55% is protein composed of subunits of nearly identical or identical molecular weights: 28,000 to 29,000.
Cox et al. (Sat,) studied this question.