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本文对地骨皮药材及其混淆品香加皮、荃皮为粉末显微特征进行了比较和鉴别，通过组织细胞形态的比较和鉴别，达到了准确区分的目的。
In this paper, the microscopic characteristics of Dendrobium medicinal materials and their contaminants, Xiangjiapi and Suipi, were compared and identified. Through the comparison and identification of cell morphology, accurate distinction was achieved.