Immunogen sequence: MPGTKRFQHV IETPEPGKWE LSGYEAAVPI TEKSNPLTQD LDKADAENIV RLLGQCDAEI FQEEGQALST YQRLYSESIL TTMVQVAGKV QEVLKEPDGG LVVLSGGGTS GRMAFLMSVS FNQLMKGLGQ KPLYTYLIAG GDRSVVASRE GTEDSALHGI EELKKVAAGK KRVIVIGISV GLSAPFVAGQ MDCCMNNTAV FLPVLVGFNP VSM