Immunogen sequence: MATAMYLEHY LDSIENLPCE LQRNFQLMRE LDQRTEDKKA EIDILAAEYI STVKTLSPDQ RVERLQKIQN AYSKCKEYSD DKVQLAMQTY EMVDKHIRRL DADLARFEAD LKDKMEGSDF ESSGGRGLKK GRGQKEKRGS RGRGRRTSEE DTPKKKKHKG GSEFTDTILS VHPSDVLDMP VDPNEPTYCL CHQVSYGEMI GCDNPDCPIE WFH