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.

However , C / EBP beta stimulated transcription primarily through the cAMP - responsive element ( CRE ) , which maps between positions - 77 to - 94 , but not at the more 5 ' - binding sites .
C / EBP

Human epidermal growth factor ( EGF ) , a naturally occurring protein , has been implicated in the protection of gastrointestinal mucosal integrity .
epidermal growth factor

Mutation of the HNF3 element significantly reduced promoter activity in HepG2 cells , whereas this element in isolation conferred HNF3beta responsiveness to a heterologous promoter .
HNF3 element