"Amino Acid, Peptide, or ProteinPTNCI" . "C0002526"^^ . . "Amino Acid, Peptide, or Protein"^^ . . . "Amino Acid, Peptide, or Protein"^^ . . "Amino Acid, Peptide, or Protein"^^ . "C232"^^ . "Amino_Acid_Peptide_or_Protein"^^ . "Amino acids and chains of amino acids connected by peptide linkages.NCI" .