Immunogen sequence: LKPFLQSCHL RMLTDPVDQC VAYHLGRVRE SLPELQIEII ADYEVHPNRR PKILAQTAAH VAGAAYYYQR QDVEADPWGN QRISGVCIHP RFGGWFAIRG VVLLPGIEVP DLPPRKPHDC VPTRADRIAL LEGFNFHWRD WTYRDAVTPQ ERYSEEQKAY FSTPPAQRLA LLGLAQPSEK PSSPSPDLPF TTPAPKKPGN PSRARSWLSP RVS