13857
In addition, PPARgamma mRNA expression in U937 cells increased during phorbol 12-myristate 13 acetate -induced differentiation .
 ( protein: PPARgamma, None) , ( RNA: PPARgamma mRNA, None) , ( cell line: U937 cells, 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: PPARgamma, None) , ( RNA: PPARgamma mRNA, None) , ( cell line: U937 cells, None) 