Immunogen sequence: TFSPQIGLAQ TQHHQQPPPP APAPQPAQPA QPPQAQPPQQ RRSPASPSQA PYAQRSAAAA YGHQPIMTSK PSSSSAVAAA AAAAAASSAS SSWNTHQSVN AAWSAPSNPW GGLQAGRDPR RAVGVGVGVG VGVPSPLNPI SPLKKPFSSN VIAPPKFPRA APLTSKSWME DNAFRTDNGN NLLPFQDRSR PYDTFNLHSL ENSLMDMIRT DHE