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Its activity was twice that of a construct where the CAT gene was driven by the H - 2Kb 5 ' enhancer region ( H2TF1 / KBF1 site ) and comparable to that of pRSVCAT construct carrying the strong Rous sarcoma virus LTR enhancer .
 GENE: CAT gene; GENE: H - 2Kb 5 ' enhancer region; GENE: H2TF1; GENE: KBF1; GENE: construct carrying the strong Rous sarcoma virus LTR enhancer
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: CAT gene; GENE: H - 2Kb 5 ' enhancer region; GENE: H2TF1; GENE: KBF1; GENE: construct carrying the strong Rous sarcoma virus LTR enhancer