Immunogen sequence: MGWSCLVTGA GGLLGQRIVR LLVEEKELKE IRALDKAFRP ELREEFSKLQ NRTKLTVLEG DILDEPFLKR ACQDVSVVIH TACIIDVFGV THRESIMNVN VKGTQLLLEA CVQASVPVFI YTSSIEVAGP NSYKEIIQNG HEEEPLENTW PTPYPYSKKL AEKAVLAANG WNLKNGDTLY TCALRPTYIY GEGGPFLSAS INEALNNNGI LSS