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.

[EX Q]:  The Runt family transcription factor CBFalpha2 ( AML1 , PEBP2alphaB , or Runx1 ) is required by hematopoietic stem cells and expressed at high levels in T - lineage cells .
[EX A]: transcription factor

[EX Q]:  Using enhancer - reporter constructs , IL - 4 specifically down - regulated the NFIL - 2B element .
[EX A]: IL - 4

[EX Q]:  Human eosinophils constitutively express nuclear factor of activated T cells p and c .
[EX A]:
nuclear factor