How do ldl and hdl differ structurally and functionally?

The main structural difference between LDL and HDL is their compositions. Approximately 50% of the weight of an LDL particle is cholesterol and only 25% is protein. High-density lipoprotein particles, on the other hand, consist of 20% percent cholesterol by weight and 50% protein.

amber has allowed scientists to study dna that has been preserved over millions of years.