Immunogen sequence: PMAVALKPVL QQSREARDEL PGAPPVLCSS SSDLSLLLGP SFQSQHSFQP LEPKPDLTSS TAGAFSALGA FHPDHRAERP FPEEDPGPDG EGLLKQGLPP AQLEGLKNFL HQLLETVPQN NENPSVDLLP PKSGPLTVPS WEEAPQVPRI PPPVHKTKVP LAMASSLFRV PEPPSSHSQG SGPSSGSPER GGDGLTFPRQ LMEVSQLLRL YQA