the relative specificity of the gamma-gt reaction with diglycine and eight essential amino acids as substrates correlated well with the rate of intestinal absorption of this dipeptide and these amino acids as observed by others . gamma-gt activity was 12-fold greater in the jejunum than in the ileum , again in agreement with relative rates of amino acid absorption along the length of rat intestine .
C0017984
diglycine
C0012512
dipeptide