Assertion: ectopic cartilage | /r/MadeOf | exosome
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text: Of note, the ectopic cartilage formed by exosomes derived from bone marrow MSCs also appeared to be macroscopically vascularized, expressed increased levels of angiogenic markers such as stromal-derived factor-1, and vascular endothelial growth factor, and had more intense staining of CD31 compared with the group treated with exosomes derived from chondrocytes, which was largely avascularized.20