232
In this report we describe the use of recombinant retroviruses to characterize the activity of an exogenous promoter in primary cells obtained from patients with lymphoproliferative disorders .
 DNA: exogenous promoter
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:
 DNA: exogenous promoter