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Promiscuous transcriptional activity of the reticuloendotheliosis virus ( REV ) long terminal repeat ( LTR ) was detected in transient expression assays using LTR- chloramphenicol acetyltransferase -encoding gene chimeras , and cells of diverse species and tissue type; levels of expression from two different REV LTRs correlate with reports of pathogenicity of the respective viruses in vivo.
 DNA: REV LTRs; DNA: LTR; DNA: LTR- chloramphenicol acetyltransferase -encoding gene chimeras; protein: chloramphenicol acetyltransferase; DNA: reticuloendotheliosis virus ( REV ) long terminal repeat
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: REV LTRs; DNA: LTR; DNA: LTR- chloramphenicol acetyltransferase -encoding gene chimeras; protein: chloramphenicol acetyltransferase; DNA: reticuloendotheliosis virus ( REV ) long terminal repeat