Hyaluronic acid (HA), also known as hyaluronic acid, is an acid mucopolysaccharide. In 1934, kachemical bookrl Meyer, a professor of Ophthalmology at Columbia University in the United States, first isolated the substance from bovine vitreous. Hyaluronic acid, with its unique molecular structure and physical and chemical properties, shows many important physiological functions in the body<br>
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