Immunogen sequence: MATPPFRLIR KMFSFKVSRW MGLACFRSLA ASSPSIRQKK LMHKLQEEKA FREEMKIFRE KIEDFREEMW TFRGKIHAFR GQILGFWEEE RPFWEEEKTF WKEEKSFWEM EKSFREEEKT FWKKYRTFWK EDKAFWKEDN ALWERDRNLL QEDKALWEEE KALWVEERAL LEGEKALWED KTSLWEEENA LWEEERAFWM ENNGHIAGEQ MLE