Roberts, S A The effect of graded intake of glycyl-L-tyrosine on phenylalanine and tyrosine metabolism in parenterally fed neonates with an estimation of tyrosine requirement. [electronic resource] - Pediatric research Jan 2001 - 111-9 p. digital Publication Type: Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, Non-U.S. Gov't ISSN: 0031-3998 Standard No.: 10.1203/00006450-200101000-00022 doi Subjects--Topical Terms: Amino Acids--urineDipeptides--administration & dosageHumansInfant, NewbornParenteral NutritionPhenylalanine--metabolismTyrosine--metabolism