Immunogen sequence: MEDTQAIDWD VEEEEETEQS SESLRCNVEP VGRLHIFSGA HGPEKDFPLH LGKNVVGRMP DCSVALPFPS ISKQHAEIEI LAWDKAPILR DCGSLNGTQI LRPPKVLSPG VSHRLRDQEL ILFADLLCQY HRLDVSLPFV SRGPLTVEET PRVQGETQPQ RLLLAEDSEE EVDFLSERRM VKKSRTTSSS VIVPESDEEG HSPVLGGLGP PFA