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A subsequent transfection of these apparently "nonresponsive" clones allows the recovery of Tax responses in these cells.
 "nonresponsive" clones, Tax
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:
 "nonresponsive" clones, Tax