the following parameters were measured : pyridoxal 5'-phosphate ( plp ) concentrations in plasma , brain , liver and azo dye-induced hepatomas , as well as the activities of pyridoxine ( pn ) kinase , pyridoxine 5'-phosphate ( pnp ) oxidase , pnp phosphatase and plp-dependent ornithine decarboxylase .
C0023884
liver
C2239176
hepatomas