目的:观察大黄素在树突状细胞中的分布。方法:在体外培养的树突状细胞(dendritic cells,DC)中加入大黄素,利用大黄素的荧光特性,用荧光显微镜观察大黄素在细胞内外的分布。结果:在细胞膜上大黄素的荧光最强,细胞浆中荧光较弱,且呈颗粒形式散在分布,少数出现在胞核内。结论:大黄素在树突状细胞中呈现选择性分布。 Objective: To observe the distribution of emodin in dendritic cells. METHODS: Emodin was added to dendritic cells (DCs) cultured in vitro. The emodin fluorescence characteristics were used to observe the distribution of emodin inside and outside the cells by fluorescence microscopy. RESULTS: The emodin fluorescence was the strongest on the cell membrane, and the fluorescence in the cytoplasm was weak. The emodin was scattered in the form of particles, and a few appeared in the nucleus. Conclusion: Emodin exhibits a selective distribution in dendritic cells.