11044
The AP-1 mutant constructs also showed delayed transcriptional activation in PMA-treated fibroblasts .
 ( protein: AP-1, None) , ( cell line: PMA-treated fibroblasts, None) , ( DNA: AP-1 mutant constructs, 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: AP-1, None) , ( cell line: PMA-treated fibroblasts, None) , ( DNA: AP-1 mutant constructs, None) 