3423
Expression of these chemokines is similar in that both require the NF - kappa B element and additional regions such as the CAAT / enhancer binding protein ( C / EBP ) element of the IL - 8 promoter .
 GENE: NF - kappa B element; GENE: CAAT / enhancer binding protein; GENE: C / EBP; GENE: IL - 8 promoter
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
 GENE: NF - kappa B element; GENE: CAAT / enhancer binding protein; GENE: C / EBP; GENE: IL - 8 promoter