<unk>  <unk>  is a linear polysaccharide found in all animal tissues. It occurs as a proteoglycan (PG) in which two or three<unk>  chains are attached in close proximity to cell surface or extracellular matrix proteins. It is in this form that<unk>  binds to a variety of protein ligands and regulates a wide variety of biological activities, including developmental processes, angiogenesis, blood coagulation and tumour metastasis.
Heparan sulfate
Dermatan sulfate
Pentosan polysulfate
Chondroitin sulfate
Sarcoglycan
Keratan sulfate
Lecithin
Hyaluronic acid 