Immunogen sequence: WCRFSQMLHP IFEEASDVIK EEFPNENQVV FARVDCDQHS DIAQRYRISK YPTLKLFRNG MMMKREYRGQ RSVKALADYI RQQKSDPIQE IRDLAEITTL DRSKRNIIGY FEQKDSDNYR VFERVANILH DDCAFLSAFG DVSKPERYSG DNIIYKPPGH SAPDMVYLGA MTNFDVTYNW IQDKCVPLVR EITFENGEEL TEEGLPFLIL FHM