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https://www.matexcel.com/category/products/natural-materials/hyaluronic-acid/<br>Hyaluronic acid (HA) is a non-sulphated glycosaminoglycan (GAG) and is composed of repeating polymeric disaccharides of D-glucuronic acid and N-acetyl-D-glucosamine linked by a glucuronidic u03b2 (1u21923) bond.<br>
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