Immunogen sequence: MVMQFQGLEN PIQISPHCSC TPSGFFMEMM SMKPAKGVLT EQVAGPLGQN LEVEPYSQYS NVQFPQVQPQ ISSSSYYSNL GFYPQQPEEW YSPGIYELRR MPAETLYQGE TEVAEMPVTK KPRMGASAGR IKGDELCVVC GDRASGYHYN ALTCEGCKGF FRRSITKNAV YKCKNGGNCV MDMYMRRKCQ ECRLRKCKEM GMLAECMYTG LLT