Heparan sulfates (HS) are long, unbranched, negatiely charged polysaccharides that are bound to core proteins.是什么意思_Heparan sulfates (HS) are long, unbranched, negatiely charged polysaccharides that are bound to core proteins.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句