1839
Second, recombinant LEF-1 is shown to activate HIV-1 transcription on chromatin-assembled DNA in vitro.
 protein: LEF-1; protein: recombinant LEF-1; DNA: chromatin-assembled DNA
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: LEF-1; protein: recombinant LEF-1; DNA: chromatin-assembled DNA