Immunogen sequence: EDGSWCPMRP KKEAMKVSSQ PCTKIESSSV LSKPCSVTVA SEASKKKVDV IDLTIESSSD EEEDPPAKRK CIFMSETQSS PTKGVLMYQP SSVRVPSVTS VDPAAIPPSL TDYSVPFHHT PISSMSSDLP GLDFLSLIPV DPQYCPPMFL DSLTSPLTAS STSVTTTSSH ESSTHVSSSS SRSETGVITS SGSNIPDIIS LD Positive Sa