Immunogen sequence: QIINGEDCSP HSQPWQAALV MENELFCSGV LVHPQWVLSA AHCFQNSYTI GLGLHSLEAD QEPGSQMVEA SLSVRHPEYN RPLLANDLML IKLDESVSES DTIRSISIAS QCPTAGNSCL VSGWGLLANG RMPTVLQCVN VSVVSEEVCS KLYDPLYHPS MFCAGGGQDQ KDSCNGDSGG PLICNGYLQG LVSFGKAPCG QVGVPGVYTN LCK