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Qualitative characteristics of LDL. (a) Proportion of electronegative LDL (LDL(-)) determined by anion-exchange chromatography. (b) Susceptibility to aggregation. The proportion of aggregated LDL was determined by gel filtration chromatography after in vitro lipolysis with SMase. (c) Susceptibility to oxidation induced by CuSO4 incubation, expressed as lag phase time. Data are expressed as mean ± SD. Bars indicate P. Blue values indicate statistically significant differences.
