isozymes of carbamyl phosphate synthetase ( cps ) , cps i , a mitochondrial enzyme found exclusively in liver and involved in urea synthesis , and of cps ii , a soluble cytoplasmic enzyme widely distributed in animal tissues , were assayed in rat liver and in a series of rat liver neoplasms ranging widely in growth rate and degree of differentiation .
C0026237
mitochondrial
C0010834
cytoplasmic