The ground substance of the extracellular matrix.

An aggrecan is a variety of proteoglycan, containing chondroitin sulphate - a major component of cartilage.

a thin layer of proteoglycan reinforced by intermediate filaments.

J. G. Beeley has written:

'Glycoprotein and proteoglycan techniques' -- subject(s): Analysis, Glycoproteins, Proteoglycans

William Mark Erwin has written:

'A study of canine notochord cell-derived soluble factors that enhance proteoglycan production by intervertebral disc chondrocytes'