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US4636524A Cross-linked gels of hyaluronic acid and products containing such gels 失效
透明质酸的交联凝胶和含有这种凝胶的产品

Cross-linked gels of hyaluronic acid and products containing such gels
摘要:
Disclosed are cross-linked gels of hyaluronic acid, alone or mixed with other hydrophilic polymers and containing various substances or covalently bonded low molecular weight substances and processes for preparing them. These products are useful in numerous applications including cosmetic formulations and as drug delivery systems.
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