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本文对市售的一批外皮木栓层已脱落的首乌藤与正品首乌藤进行了显微鉴别、薄层色谱鉴别等方面的对比，发现其为提取有效成分后的剩余物
In this paper, a comparison of microscopic identification and thin-layer chromatographic identification of Shouwuteng, which is a commercially available batch of exoskeleton cork layer, was performed, and it was found as a residue after extraction of active ingredients.