ABSTRACT
<p><b>OBJECTIVE</b>To construct and identify blood type B antigen mimetic polypeptide-macrophage inflammatory protein 3beta (Mip3beta) double expression recombinant plasmid.</p><p><b>METHODS</b>The positive phage clone P1 was obtained using phage random 12-mer peptide library. Specific primers were designed to amplify the phage DNA of P1 and transmembrane domain and inner segment of PBluscript-Fas gene. The products of the amplification were linked into Mip3betav21 to construct blood type B antigen mimetic polypeptide-Mip3beta double expression recombinant plasmid. The recombinant plasmid was transfected into human melanoma cell line B16 to identify its expression.</p><p><b>RESULTS AND CONCLUSION</b>Blood type B antigen mimetic polypeptide-Mip3beta double expression recombinant plasmid is successfully obtained and expressed in human melanoma cell line B16.</p>