1167
A series of 5 ' - deletions revealed that the fragment - 218 to + 4 from the TSS had the highest promoter activity , nearly 1000 - fold greater than the promoterless chloramphenicol acetyltransferase construct .
 GENE: chloramphenicol acetyltransferase construct
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: chloramphenicol acetyltransferase construct