Immunogen sequence: MLSSIKCVLV GDSAVGKTSL LVRFTSETFP EAYKPTVYEN TGVDVFMDGI QISLGLWDTA GNDAFRSIRP LSYQQADVVL MCYSVANHNS FLNLKNKWIG EIRSNLPCTP VLVVATQTDQ REMGPHRASC VNAMEGKKLA QDVRAKGYLE CSALSNRGVQ QVFECAVRTA VNQARRRNRR RLFSINECKI F; Positive Samples: BT-4