Immunogen sequence: MEPPLPVGAQ PLATVEGMEM KGPLREPCAL TLAQRNGQYE LIIQLHEKEQ HVQDIIPINS HFRCVQEAEE TLLIDIASNS GCKIRVQGDW IRERRFEIPD EEHCLKFLSA VLAAQKAQSQ LLVPEQKDSS SWYQKLDTKD KPSVFSGLLG FEDNFSSMNL DKKINSQNQP TGIHREPPPP PFSVNKMLPR EKEASNKEQP KVTNTMRKLF VPN