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OM10.1 , a promyelocyte cell line latently infected with HIV-1 , has been developed as a model for studying the mechanism of viral latency and the activation of virus expression .
 OM10.1, promyelocyte cell line
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
Answer:
 OM10.1, promyelocyte cell line