in groups b , c , and d , plasma concentrations of alanine , proline , phenylalanine , and tyrosine were negatively correlated with the blood -- ketone body ratio and the molar ratios between the plasma concentrations of branched-chain amino acids and aromatic amino acids were positively correlated with the blood -- ketone body ratio .
C0041485
tyrosine
C0301713
aromatic amino acids