Lipoproteins are complex particles composed of lipids and proteins. They play a crucial role in the transport of lipids, such as cholesterol and triglycerides, in the bloodstream. Lipoproteins are classified based on their density into several types, including high-density lipoproteins (HDL), low-density lipoproteins (LDL), and very-low-density lipoproteins (VLDL). Their structural complexity and functional diversity make them essential for numerous biological processes.
