4939
The effect on FIV LTR promoter activity of progressively deleting these nuclear factor binding sites was examined by linking LTR deletion mutants to the chloramphenicol acetyltransferase ( CAT ) gene .
 GENE: FIV LTR promoter; GENE: chloramphenicol acetyltransferase; GENE: CAT
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: FIV LTR promoter; GENE: chloramphenicol acetyltransferase; GENE: CAT