In this task, you are given a sentence. You are expected to recognize the name of gene or protein. Although there might be several correct answers, you need to write one of them.
--------
Question:  Together these data indicate that IFN - alpha can facilitate activation of Th1 - reactive cells in the gut and drive immunopathology .

Answer: IFN - alpha


Question:  NF - P2 appears to be induced by reagents known to up - regulate the perforin message level and is present exclusively in killer cells .

Answer: NF - P2


Question:  Positive and negative regulation of granulopoiesis by endogenous RARalpha .

Answer:
endogenous RARalpha