Immunogen sequence: TQQGIKSQTK EEQSQITSQV TGQIGWRREG IKYRRNELFL DVLESVNLLM SPQGQVLSAH VSGRVVMKSY LSGMPECKFG MNDKIVIEKQ GKGTADETSK SGKQSIAIDD CTFHQCVRLS KFDSERSISF IPPDGEFELM RYRTTKDIIL PFRVIPLVRE VGRTKLEVKV VIKSNFKPSL LAQKIEVRIP TPLNTSGVQV ICMKGKAKYK ASE