3536
Here we report that sustained high concentrations of Ca2+ , but not transient pulses , are required to maintain NF-AT transcription factors in the nucleus, where they participate in Ca2+ -dependent induction of genes required for lymphocyte activation and proliferation .
 ( protein: NF-AT, None) , ( protein: transcription factors, None) , ( cell type: lymphocyte, None) , ( DNA: genes, 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: transcription factors, None) , ( cell type: lymphocyte, None) , ( DNA: genes, None) 