Patent ID: 7135458

Claim:
A pharmaceutical composition, comprising a polypeptide as an active ingredient and a pharmaceutically-acceptable carrier, wherein said polypeptide comprises an amino acid sequence selected from the group consisting of: (a) SEQ ID NO:6, where amino acid residue 73, as represented by Xaa, is Ile or Thr; (b) a contiguous fragment of SEQ ID NO:6, which fragment induces interferon-γ production in immunocompetent human cells and has a molecular weight of about 18,500±3,000 daltons on sodium dodecyl sulfate polyacrylamide gel electrophoresis; and (c) a variant of (a) or (b) differing therefrom by replacement of one amino acid residue, which variant induces interferon-γ production in immunocompetent human cells.