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Using these drugs as probes, chemists and biologists have uncovered several intracellular signalling molecules bridging the generation of second-messenger Ca2+ ions and the transcriptional activation of IL-2 , among which are calmodulin , calcineurin and the nuclear factor of activated T cells ( NF-AT ).
 ( protein: NF-AT, None) , ( protein: calcineurin, None) , ( protein: calmodulin, None) , ( protein: IL-2, None) , ( protein: nuclear factor of activated T cells, None) , ( cell type: activated T cells, None) , ( cell type: T cells, None) 
Locate the role in the text that participated in the event based on the event type and return it in the event list. 
 Option: Event type: RNA,cell type,protein,cell line,DNA, Arguments type: . 
Text: {0} 
Answer:
 ( protein: NF-AT, None) , ( protein: calcineurin, None) , ( protein: calmodulin, None) , ( protein: IL-2, None) , ( protein: nuclear factor of activated T cells, None) , ( cell type: activated T cells, None) , ( cell type: T cells, None) 