Impaired proliferation of MSC from DM bone marrow was restored by oxytocin. (A) Differentiation of MSC isolated from bone marrow was induced into adipogenic, chondrogenic, or osteogenic lineage. (B) The proliferation rate was significantly reduced in DM-MSC (n=5). (C) DM-MSC pretreated with oxytocin for 24 hours restored proliferation activity (n=5). * P<0.01 vs. Non-DM-MSC.