3285
In these cells, nuclear factors involved in activation of the HIV-1 LTR , which contains the transcriptional control elements of the virus, are unknown.
 DNA: HIV-1 LTR; protein: nuclear factors; DNA: transcriptional control elements
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: HIV-1 LTR, nuclear factors, transcriptional control elements 
Answer:
 DNA: HIV-1 LTR; protein: nuclear factors; DNA: transcriptional control elements