Immunogen sequence: MGCGLNKLEK RDEKRPGNIY STLKRPQVET KIDVSYEYRF LEFTTLSAAE LPGSSAVRLA SLRDLPAQLL ELYQQGFSLA ALHPFVQPTH EREKTPLEHI FRAILIKKTD RSQKTDLHNE GYILELDCCS SLDHPTDQKL IPEFIKKIQE AASQGLKFVG VIPQYHSSVN SAGSSAPVST ANSTEDARDA KNARGDHASL ENEKPGTGDV CSA