Immunogen sequence: MATSSMSKGC FVFKPNSKKR KISLPIEDYF NKGKNEPEDS KLRFETYQLI WQQMKSENER LQEELNKNLF DNLIEFLQKS HSGFQKNSRD LGGQIKLREI PTAALVLGVN VTDHDLTFGS LTEALQNNVT PYVVSLQAKD CPDMKHFLQK LISQLMDCCV DIKSKEEESV HVTQRKTHYS MDSLSSWYMT VTQKTDPKML SKKRTTSSQW QSP