Immunogen sequence: ADIFQASGAK YIVLTSKHHE GFTLWGSEYS WNWNAIDEGP KRDIVKELEV AIRNRTDLRF GLYYSLFEWF HPLFLEDESS SFHKRQFPVS KTLPELYELV NNYQPEVLWS DGDGGAPDQY WNSTGFLAWL YNESPVRGTV VTNDRWGAGS ICKHGGFYTC SDRYNPGHLL PHKWENCMTI DKLSWGYRRE AGISDYLTIE ELVKQLVETV SCG