the ornithine aminotransferase ( ec 2.6.1.13 ) , tyrosine aminotransferase ( ec 2.6.1.5 ) , and arginase ( ec 3.5.3.1 ) activities in the 8999c cells were one-third , one-tenth , and one-hundredth of those of the respective activities in the original hepatoma 8999 , and mitochondrial serine protease , which has much higher activity in hepatoma 8999 than in normal liver cells , was not detected in 8999c cells .
C0026237
mitochondrial
C0007634
cells