Immunogen sequence: ETSLAQYSLT QLCVGFNGGK DCTALLHLFH AAVQRKLPDV PNPLQILYIR SISPFPELEQ FLQDTIKRYN LQMLEAEGSM KQALGELQAR HPQLEAVLMG TRRTDPYSCS LCPFSPTDPG WPAFMRINPL LDWTYRDIWD FLRQLFVPYC ILYDRGYTSL GSRENTVRNP ALKCLSPGGH PTYRPAYLLE NEEEERNSRT; Positive Samp