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聚乳酸(PLA)及其共聚物具有良好的生物相容性和生物降解性,在人体内无积聚,最终可完全降解为二氧化碳和水。PLA微球可用于制备生物降
Polylactic acid (PLA) and its copolymers have good biocompatibility and biodegradability and do not accumulate in the human body and eventually can be completely degraded into carbon dioxide and water. PLA microspheres can be used to prepare biological drop