intracellular concentrations for phenylalanine , tyrosine , alpha-amino butyric acid and 7 other amino acids ( glycine , alanine , valin , cystin , methionine , iso-leucin , leucin ) were measured in lymphocytes of 13 homozygotes and 19 heterozygotes for phenylketonuria as well as in lymphocytes of 26 normals .
C0002520
amino acids
C0017890
glycine