Efek pemberian sel punca mesenkim intrahepatika dan intrasplenika terhadap kadar alanin aminotransferase, apartat aminotransferase, bilirubin, dan fibrosis hati Oryctolagus cuniculus ligasi duktus bilier = The effect of intrahepatic and intrasplenic administration of mesenchymal stem cell to alanine aminotransferase, aspartate aminotransferase, bilirubin level and degree of liver fibrosis in Oryctolagus cuniculus bile duct ligation model