25972
Furthermore , luciferase reporter assay revealed that the C / EBP beta binding motif in the UBR2 promoter is a functional C / EBP beta - responsive cis - element that enhances the promoter activity on activation by p38 beta .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None