Immunogen sequence: MDSPEIRELE KFANEFKVRR IKLGYTQTNV GEALAAVHGS EFSQTTICRF ENLQLSFKNA CKLKAILSKW LEEAEQVGAL YNEKVGANER KRKRRTTISI AAKDALERHF GEQNKPSSQE IMRMAEELNL EKEVVRVWFC NRRQREKRVK. PIT1 is a pituitary-specific transcription factor responsible for pi