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Earlier studies on the IL-2 gene expression showed that overexpression of calcineurin ( CN ), a Ca2+/calmodulin-dependent protein phosphatase , can stimulate transcription from the IL-2 promoter through the NF-AT-binding site .
 IL-2 promoter, NF-AT-binding site, Ca2+/calmodulin-dependent protein phosphatase, IL-2, CN, calcineurin, IL-2
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:
 IL-2 promoter, NF-AT-binding site, Ca2+/calmodulin-dependent protein phosphatase, IL-2, CN, calcineurin, IL-2