Gannan Medical University 1 article published in JoVE Cancer Research An Enrichment Method for Small Extracellular Vesicles Derived from Liver Cancer Tissue Xiaoxing Wang1,2, Jie Chen1,2, Zhengzhe Li1,2, Defa Huang1,2, Xiaomei Yi1,2, Jiyang Wu1,2, Tianyu Zhong1,2 1The First School of Clinical Medicine, Gannan Medical University, 2Laboratory Medicine, First Affiliated Hospital of Gannan Medical University Here we describe the enrichment of small extracellular vesicles derived from liver cancer tissue through an optimized differential ultracentrifugation method.