Abstract
The activity in serum and liver tissue of the highly ‘liver-specific’ enzyme ornithine carbamoyl transferase (OCT) has been studied after partial hepatectomy in rats and compared with the activity of glutamic pyruvic transaminase (GPT). The OCT activity in serum increased after the operation and returned to normal much more slowly than the GPT activity. The OCT activity in the liver was depressed during at least three months after the operation.