Immunogen sequence: FPRQLLIRHF WTPKQQTDFL DIYHAFRKQS HPEIISYLEK VIPLISDAGL RWRLTDLCTK IQRGTHPAIH DILALRECFS NHPLGMNQLQ ALHVKALSRA MLLTSYLPPP LLRHRLKTHT TVIHQLDKAL AKLGIGQLTA QEVKSACYLR GLNSTHIGED RCRTWLGEWL QISCSLKEAE LSLLLHNVVL LSTNYLGTRR; Positive Samp