Immunogen sequence: MAMAEGERTE CAEPPRDEPP ADGALKRAEE LKTQANDYFK AKDYENAIKF YSQAIELNPS NAIYYGNRSL AYLRTECYGY ALGDATRAIE LDKKYIKGYY RRAASNMALG KFRAALRDYE TVVKVKPHDK DAKMKYQECN KIVKQKAFER AIAGDEHKRS VVDSLDIESM TIEDEYSGPK LEDGKVTISF MKELMQWYKD QKKLHRKCAY; Po