Immunogen sequence: MEPEFLYDLL QLPKGVEPPA EEELSKGGKK KYLPPTSRKD PKFEELQKVL MEWINATLLP EHIVVRSLEE DMFDGLILHH LFQRLAALKL EAEDIALTAT SQKHKLTVVL EAVNRSLQLE EWQAKWSVES IFNKDLLSTL HLLVALAKRF QPDLSLPTNV QVEVITIEST KSGLKSEKLV EQLTEYSTDK DEPPKDVFDE LFKLAPEKVN AVK