Immunogen sequence: MAEFLDDQET RLCDNCKKEI PVFNFTIHEI HCQRNIGMCP TCKEPFPKSD METHMAAEHC QVTCKCNKKL EKRLLKKHEE TECPLRLAVC QHCDLELSIL KLKEHEDYCG ARTELCGNCG RNVLVKDLKT HPEVCGREGE EKRNEVAIPP NAYDESWGQD GIWIASQLLR QIEALDPPMR LPRRPLRAFE SDVFHNRTTN QRNITAQVSI QNN