prov:value
| - A purified peptide can include the amino acid sequence C*-X1-X2-X3-X4-X5-X6-X7-X8-C* (SEQ ID NO: 816), wherein X1, X2, X3, X4, X5, X6, X7, and X8 are any amino acid; C* is C or Pen in D or L form; and the peptide has a length of 10 to 50 amino acids, such as 10 to 20 amino acids, 10 to 30 amino acids, 10 to 40 amino acids, and 10 to 15 amino acids.
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