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In addition, we identify a major PB1 nuclear protein-binding complex that is not present in resting peripheral blood T cells but is rapidly induced following T-cell activation .
 PB1 nuclear protein-binding complex, peripheral blood T cells, PB1, resting peripheral blood T cells
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:
 PB1 nuclear protein-binding complex, peripheral blood T cells, PB1, resting peripheral blood T cells