Immunogen sequence: VQPSHQEPAG TDQHVSKEFD WLISDRGPFH HSRSYLSFVE RHRQGFTTRY KIYREFARWK VRNTAIERRD LVRHPVPLMP EFQRSIRLLG RRPTTQQFID TIIKKYGTHL LISATLGGEE ALTMYMDKSR LDRKSGNATQ SVEALHQLAS SYFVDRDGTM RRLHEIQIST GAIKVTETRT GPLGCNSYDN LDSVSSVLLQ STESKLHLQG LQI