降级(电信)
透明质酸
化学
计算机科学
工艺工程
工程类
生物
电信
遗传学
摘要
Hyaluronic acid (HA) is an unbranched polysaccharide consisting of the repeating disaccharide unit β(1→4)-GlcA-β(1→3)-GlcNAc and is a naturally occurring biopolymer in bacteria and vertebras. HA is ...
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