Immunogen sequence: MASTIKEALS VVSEDQSLFE CAYGTPHLAK TEMTASSSSD YGQTSKMSPR VPQQDWLSQP PARVTIKMEC NPSQVNGSRN SPDECSVAKG GKMVGSPDTV GMNYGSYMEE KHMPPPNMTT NERRVIVPAD PTLWSTDHVR QWLEWAVKEY GLPDVNILLF QNIDGKELCK MTKDDFQRLT PSYNADILLS HLHYLRETPL PHLTSDDVDK ALQ