为解决胶原酶免疫原性，采用经氯甲酸对硝基苯酯活化的单甲氧基聚乙二醇来修饰胶原酶。
In order to overcome the immunogenicity of collagenase, the enzyme was modified with monomethoxypolyethylene glycol 5000 (mPEG) activated by p nitrophenyl chloroformate.
讨论了不同四甲氧基硅烷（TMOS）与聚乙二醇（PEG）配比、老化条件、陈化时间对硅胶柱的影响，并采用SEM、BET、强度测试等手段对其结构进行表征。
The effects of TMOS/PEG ratios and aging conditions on the pore structure were investigated and the prepared samples were characterized by SEM, BET and hardness tester.
讨论了不同四甲氧基硅烷（TMOS）与聚乙二醇（PEG）配比、老化条件、陈化时间对硅胶柱的影响，并采用SEM、BET、强度测试等手段对其结构进行表征。
The effects of TMOS/PEG ratios and aging conditions on the pore structure were investigated and the prepared samples were characterized by SEM, BET and hardness tester.
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