Immunogen sequence: MATPDAGLPG AEGVEPAPWA QLEAPARLLL QALQAGPEGA RRGLGVLRAL GSRGWEPFDW GRLLEALCRE EPVVQGPDGR LELKPLLLRL PRICQRNLMS LLMAVRPSLP ESGLLSVLQI AQQDLAPDPD AWLRALGELL RRDLGVGTSM EGASPLSERC QRQLQSLCRG LGLGGRRLKS PQAPDPEEEE NRDSQQPGKR RKDSEEEAAS PEG