TASK DEFINITION: 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.
PROBLEM:  Electrophoretic - mobility - shift assays showed that the core promoter ETS motif binds an Ets - related protein specifically expressed at high levels in CD4 + cells .

SOLUTION: core promoter

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

SOLUTION: endogenous RARalpha

PROBLEM:  However , phosphorylation of CREB alone is not sufficient to drive PCNA expression and L2 cell proliferation in the absence of IL - 2 .

SOLUTION:
IL - 2