Immunogen sequence: HPYTMTTPYP SLPAQQVHNY MMPPLDRSWR DYVPDQPHPE IPYQCPMTFG PRGHHWQGPA CENGCQVTGT FYACAPPESQ APGVPTEPSI RSAEALAFSD CRLHICLYYR EILVKELTTS SPEGCRISHG HTYDASNLDQ VLFPYPEDNG QRKNIEKLLS HLERGVVLWM APDGLYAKRL CQSRIYWDGP LALCNDRPNK L; Positive Sa