520
Here we show that phorbol ester treatment also abolishes induction of chloramphenicol acetyltransferase activity in Ar-5 cells transfected with a plasmid containing the IL-2 promoter linked to this reporter gene .
 protein: chloramphenicol acetyltransferase; DNA: IL-2 promoter; cell line: Ar-5 cells; DNA: reporter gene; DNA: plasmid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 protein: chloramphenicol acetyltransferase; DNA: IL-2 promoter; cell line: Ar-5 cells; DNA: reporter gene; DNA: plasmid