secondary cultures of 5 normal and 5 tsk mice dermal fibroblasts were incubated in media containing 10 % fetal calf serum and 50 micrograms/ml ascorbic acid and after labeling with [ 14c ] proline for 72 h the amount of [ 14c ] hydroxyproline synthesized was determined .
C0033382
proline
C0020388
hydroxyproline