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.

Example Input:  The present report shows that a cis - acting element between - 189 and - 175 bp , which binds thyroid transcription factor - 1 ( TTF - 1 ) , is involved in both activities .
Example Output: TTF - 1

Example Input:  Furthermore , the rapid light - mediated increase of CPRF proteins was insensitive to transcriptional inhibitors , suggesting that a post - transcriptional mechanism controls CPRF accumulation .
Example Output: CPRF proteins

Example Input:  Selective upper abdominal sympathectomy increased basal acid output in rats but was without effect on stimulated acid output , serum gastrin concentration , and gastric mucosal histidine decarboxylase activity .
Example Output:
serum gastrin