As specified in the introduction, comparative proteomic analyses have shown that the WJ-MSC secretome possess a broader and more diverse protein profile than those from adult-derived MSCs, including AD-MSCs, with higher levels of immunomodulatory and pro-regenerative factors such as HGF, VEGF, IL-6, and TGF-β1 [17,38]. Here, TGFB1 is linked to Alzheimer disease.