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.

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

A: endogenous RARalpha
****
Q:  IL - 4 plays a critical role in the differentiation of T CR - stimulated naive CD4 T cells to the Th2 phenotype .

A: IL - 4
****
Q:  OBJECTIVE : We sought to characterize the expression of different NFAT proteins in resting and activated eosinophils .

A:
NFAT proteins
****