
Keywords: PBS، فسفات; Umbilical cord tissue cryopreservation; MSCs differentiation; Adipogenesis; Chondrogenesis; OsteogenesisA, Arteries; DMSO, Dimethyl Sulfoxide; FBS, Fetal Bovine Serum; HS, Human serum; MSCs, Mesenchymal stem cells; PAS, Periodic Acid Schiff; PBS, Phosphat