P0002 NATURAL KILLER CELLS MAY BE THE KEY FACTOR FOR THE AMELIORATION OF THE LIVER FIBROSIS AFTER MESENCHYMAL CELL TRANSPLANTATION. M. Banzragch 1, T. Akkoc 2, N. Zibandeh 2, M. U. Ugurlu 3, T. Akkoc 4, D. Genc 2, C. A. Celikel 5, D. G. Duman 5. 1 Gastroenterology Division, Internal Medicine, Acibadem University, Izmit/Turkey. 2 Immunology And Allergy, Marmara University, Istanbul/Turkey.