Immunogen sequence: LLRFSESSRE GAITFTWVER SQNGGEPDFH AVEPYTKKEL SAVTFPDIIR NYKVMAAENI PENPLKYLYP NIDKDHAFGK YYSRPKEAPE PMELDGPKGT GYIKTELISV SEVHPSRLQT TDNLLPMSPE EFDEVSRIVG SVE. STAT1 (signal transducers and activators of transcription 1) is a member of