8743
NF-kappaB activity is tightly correlated with the transcriptional activity of a long terminal repeat ( LTR ) of HIV-1 transfected in thymocytes .
 DNA: long terminal repeat; protein: NF-kappaB; DNA: LTR; cell type: thymocytes
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: long terminal repeat, NF-kappaB, LTR, thymocytes 
Answer:
 DNA: long terminal repeat; protein: NF-kappaB; DNA: LTR; cell type: thymocytes