INS and type 2 diabetes mellitus: In terms of other models of T2DM, our results support those of Li et al. [19], Hussien et al. [20], Si et al. [22], and Hao et al. [57], who reported that BM-MSCs infusions enhanced the status of hyperglycemia, serum C-peptide, and insulin in T2D rats induced by a fat-fed diet and STZ.