4942
Cotransfection of a CD44 promoter-chloramphenicol acetyltransferase reporter construct with an egr-1 expression vector resulted in a 6.5- to 8.5-fold induction of transcriptional activity relative to an empty expression vector .
 DNA: empty expression vector; DNA: CD44 promoter-chloramphenicol acetyltransferase reporter construct; protein: CD44; DNA: egr-1 expression vector; DNA: egr-1
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: empty expression vector, CD44 promoter-chloramphenicol acetyltransferase reporter construct, CD44, egr-1 expression vector, egr-1 
Answer:
 DNA: empty expression vector; DNA: CD44 promoter-chloramphenicol acetyltransferase reporter construct; protein: CD44; DNA: egr-1 expression vector; DNA: egr-1