[Free amino acids and polypeptides in biological fluids and tissues. IX. Combined forms of amino acids with an acid character].
D000596:Amino Acids; D001826:Body Fluids; D005243:Feces; D008099:Liver / Q000737:chemistry*; D010455:Peptides
D000596:Amino Acids; D010455:Peptides
AMINO ACIDS; LIVER/chemistry