infusion of n-acetyl-u-14c-l-tyrosine as part of a total parenteral nutrition regimen in the rat at a level of 0.5 mmol/kg/day resulted in rapid labeling of tissue tyrosine pools , production of 14co2 , incorporation of 14c-labeled tyrosine into protein , and modest urinary losses ( 8.3 % ) .
C0067794
acetyl
C0041485
tyrosine