Fig. 1From: αvβ3 integrin-specific exosomes engineered with cyclopeptide for targeted delivery of triptolide against malignant melanomaExtraction and characterization of hUCMSCs. A Schematic plot of the extraction of hUCMSCs from hUC. B Expression of hUCMSCs surface markers (CD45, CD34, CD90, CD29, CD44) identified by flow cytometryBack to article page