Immunogen sequence: DVVQEVQQVL SEFIRANPKA WAPVISAWSI DLMGQLSSTY SGQHQRVPHA TGALNELLQL WMGCRATRTL MDIYVQCLSA LIGSCPDACV DALLDTSVQH SPHFDWVVAH IGSSFPGTII SRVLSCGLKD FCVHGGAGGG AGSSGGSSSQ TPSTDPFPGS PAIPAEKRVP KIASVVGILG HLASRHGDSI RRELLRMFHD SLAGGSGGRS GDP