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Although monocytic cells can provide a reservoir for viral production in vivo, their regulation of human immunodeficiency virus type 1 ( HIV-1 ) transcription can be either latent, restricted, or productive.
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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:
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