用光学和电子显微镜技术研究了巴西橡胶树幼茎切割后乳管的堵塞。发现在切割后乳管伤口有一个由蛋白质物质组成的网，它与絮凝的橡胶粒于将乳管伤口堵塞。组成这个网的蛋白质物质主要来自黄色体的内含物，特别是微纤维。讨论了这种蛋白质网在乳管切割后堵塞中的作用。 Optical and electron microscopy techniques were used to study the clogging of the ducts after brachial cutting of Hevea brasiliensis. It was found that after cutting the ductal wound there was a network of proteinaceous material which was clogged with the flocculated rubber particles in the wound of the mammary duct. The proteinaceous material that makes up this web comes primarily from the yellow body inclusions, especially microfibrils. The role of this protein network in plugging after ductal ablation was discussed.