Immunogen sequence: MDPSLLRERE LFKKRALSTP VVEKRSASSE SSSSSSKKKK TKVEHGGSSG SKQNSDHSNG SFNLKALSGS SGYKFGVLAK IVNYMKTRHQ RGDTHPLTLD EILDETQHLD IGLKQKQWLM TEALVNNPKI EVIDGKYAFK PKYNVRDKKA LLRLLDQHDQ RGLGGILLED IEEALPNSQK AVKALGDQIL FVNRPDKKKI LFFNDKSCQF SVD