very low density lipoprotein: large lipoproteins rich in triglycerides; VLDLs circulate through the blood giving up their triglycerides to fat and muscle tissue until the VLDL remnants are modified and converted into LDL
lipoprotein: a conjugated protein having a lipid component; the principal means for transporting lipids in the blood
cell wall: a rigid layer of polysaccharides enclosing the membrane of plant and prokaryotic cells; maintains the shape of the cell and serves as a protective barrier