5066
Similar to IL-4 , IL-13 mRNA expression was highest in T-cell populations enriched for cells that had previously been primed in vivo or in vitro, indicating that priming increases the expression of the IL-13 and IL-4 genes in a coordinate manner.
 ( RNA: IL-13 mRNA, None) , ( protein: IL-4, None) , ( cell line: T-cell populations, None) , ( protein: IL-13, 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: IL-13 mRNA, None) , ( protein: IL-4, None) , ( cell line: T-cell populations, None) , ( protein: IL-13, None) 