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Electron microscope observation showed that in group A the filter meshes and their fringes were clear and fragments of floccules could be seen occasionally. In group B the floccules scattered at fringes of the filter meshes and some meshes were obstructed by the floccules.

电子显微镜示A组网眼清晰，边缘清楚，偶见有块状过滤物，B组滤网有絮状物，散在分布于网眼边缘，模糊不清，堵塞网眼，表明有纤维蛋白聚集，血小板粘附，脱落形成血小板碎片。

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