14680
In contrast, c-fos mRNA is absent from resting T cells and is induced on PHA activation .
 ( RNA: c-fos mRNA, None) , ( cell type: T cells, None) , ( protein: PHA, 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:
 ( RNA: c-fos mRNA, None) , ( cell type: T cells, None) , ( protein: PHA, None) 