“ Ascorbic acid increased the response of prolyl hydroxylase to hydralazine from 1.5- to 2-fold to 3- to 7-fold, whereas it decreased the response of lysyl hydroxylase to hydralazine from 4- to 8-fold to 2- to 3-fold.”
“In both normal and mutant cells the relative magnitude of the hydralazine effect could be modified by ascorbic acid in the culture medium.”