IL10 and myeloid sarcoma: Under inflammatory conditions, for example, MSC-derived exosomes carry anti-inflammatory molecules (like transforming growth factor β [TGF-β], IL-10, and many microRNAs) to suppress the inflammation.10 Additionally, they are able to pass through boundaries like blood-brain barrier11; therefore, MSC-derived exosomes attracted attention to be used for the treatment of MS in several animal studies.