Immunogen sequence: TWPHSVHRLA QSYLKEPMIV YVGTLDLVAV SSVKQNIIVT TEEEKWSHMQ TFLQSMSSTD KVIVFVSRKA VADHLSSDLI LGNISVESLH GDREQRDREK ALENFKTGKV RILIATDLAS RGLDVHDVTH VYNFDFPRNI EEYVHRIGRT GRAGRTGVSI TTLTRNDWRV ASELINILER ANQSIPEELV SMAERFKAHQ QKREMERKME RPQ