Immunogen sequence: GASWWIGLQE ERANDEFRWR DGTPVIYQNW DTGRERTVNN QSQRCGFISS ITGLWGSEEC SVSMPSICKR KKVWLIEKKK DTPKQHGTCP KGWLYFNYKC LLLNIPKDPS SWKNWTHAQH FCAEEGGTLV AIESEVEQAF ITMNLFGQTT SVWIGLQNDD YETWLNGKPV VYSNWSPFDI INIPSHNTTE VQKHIPLCAL LSSNPNFHFT GKW