Immunogen sequence: DLDTSSNAVD LLFFTDESGD SRGWKLRYTT EIIKCPQPKT LDEFTIIQNL QPQYQFRDYF IATCKQGYQL IEGNQVLHSF TAVCQDDGTW HRAMPRCKIK DCGQPRNLPN GDFRYTTTMG VNTYKARIQY YCHEPYYKMQ TRAGSRESEQ GVYTCTAQGI WKNEQKGEKI PRCLPVCGKP VNPVEQRQRI IGGQ Highest antigen sequ