There are repots that chemically modified heparin derivatives, which have, to certain extent, reduced anticoagulant activities.
一些研究表明，化学修饰的肝素在某种程度上能够降低它的抗凝血活性。
We tested the change of structure in heparin and chemically modified heparin with CL-6B chromatography. It is tested that the structure of them is complete.
通过CL-6B凝胶层析分析肝素修饰物的结构变化，证实修饰后肝素的主体结构十分完整；
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