Immunogen sequence: NLARRNLSRD NRQENYGSAF PQGGENRNEN EESTSKAETS EDSASRGETT GRSQKEFGEK RDQEGKTGER QQKNPEEKTR KEKRDSGPAI GKDKKTITGE RGPREKGKGL GRSFSLSSNF TTPEEVPTGT KSHRCDECGK CFTR Highest antigen sequence identity to the following orthologs: Mouse - 73%,