in the normal human lymphocytes , the activities of dihydrothymine dehydrogenase , thymidine phosphorylase , thymidine kinase , and thymidylate synthase were 6.88 , 796 , 0.30 , and 0.29 nmol/h/mg protein , respectively .
C0086418
human
C0040083
thymidine phosphorylase