[关键词]
[摘要]
外泌体是多囊泡体（MVBS)与细胞膜接触融合而释放的纳米级生物活性小囊泡；直径为30-100nm,几乎所有活细胞均可分泌，尤以肿瘤细胞分泌更为旺盛。根据其特性使得外泌体在肿瘤的诊断中有着很大的开发前景。
[Key word]
[Abstract]
Exosomes are nanoscale bioactive vesicles released by the contact and fusion of MVBS and cell membrane. With a diameter of 30-100nm, almost all living cells can be secreted, especially tumor cells. According to its characteristics, exosomes have great prospects in the diagnosis of tumors.
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