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Moreover, our findings suggest that the level of STAT3 phosphorylation is balanced between a staurosporine -sensitive kinase (s) and PP2A .
 staurosporine -sensitive kinase, PP2A, STAT3
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:
 staurosporine -sensitive kinase, PP2A, STAT3