Immunogen sequence: NVRMKLCYLL PKVKSTLKIP ADKHLLQQLE MCVRKLLCQE KDKDVLAIVK RTVLELDRME MSMDAFQKKF YEKDLLDQEK EREELLLLEM EQLEKEKQQN DGRPMSDKMF EKKRRDTKTP TQSLPKNIPI SVPGPSSVTP STSKEIKKSK LIRSQSFNNQ AFHAKYGNLE KCASKSSTTG YTTSVSGLGK TSVLSLADDS FRTRNASSVP S;