Immunogen sequence: SLEAPDSVLF PWDLKSTYIR CPSFFDKLTK EPIALQAIEN AHVLLYLGDS VTTDHISPAG SIARNSAAAK YLTNRGLTPR EFNSYGARRG NDAVMTRGTF ANIKLFNKFI GKPAPKTIHF PSGQTLDVFE AAELYQKEGI PLIILAGKKY GSGNSRDWAA KGPYLLGVKA VLAESYEKIH KDHLIGIGIA PLQFLPGENA DSLGLSGRET FSL