...m缺损模型，随机分为3组：rF II修饰PU组（n=8）、无rF II修饰PU组（n=6）和膨体聚四氟乙烯（expanded polytetrafluoroethlyene，ePTFE）组（n=6），植入相应人工血管以修复缺损。
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介绍了聚四氟乙烯分散树脂膨体化的概念和有关参数，结合实例叙述了其加工工艺、方法和设备。
Expansion concept of PTFE dispersion resins and concerned parameters are introduced, and processing procedures, method and devices are reviewed in combination with examples.
结果对照组和不同方法处理后的膨体聚四氟乙烯植入后均有组织长入。
Results Cell and tissue were observed on the inside of all thee-PTFE including the control group and the experiment groups.
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