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Chondroitin sulfate series Collagen protein Heparin series Hyaluronic acid Amino sugar series Cholic acid series
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  • Collagen protein
    Collagen protein
    A glycoprotein with molecules containing sugar and a large amount of glycine, proline, hydroxyproline, etc. (accounting for about 25%), present in all multicellular animals and is the most abundant protein in the body. It accounts for about a quarter of the protein content in the human body and is present in almost all tissues.