the expression of alanine aminotransferase ( ec 2.6.1.2 ) , an enzyme that is inducible in the liver , has been examined in somatic hybrid cells formed by crossing well-differentiated rat hepatoma cells with rat diploid epithelial cells , the former characterized by high activity and inducibility of the enzyme , and the latter by the absence of detectable activity .
C0023884
liver
C3273033
well-differentiated