13933
Furthermore, among the transcription factors tested, AP-1 activity was increased in stimulated purified T helper lymphocytes incubated with ciprofloxacin compared to drug-free controls .
 ( cell type: drug-free controls, None) , ( protein: transcription factors, None) , ( cell type: stimulated purified T helper lymphocytes, None) , ( protein: AP-1, 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:
 ( cell type: drug-free controls, None) , ( protein: transcription factors, None) , ( cell type: stimulated purified T helper lymphocytes, None) , ( protein: AP-1, None) 