698
Then the expression levels of AhR mRNA in various hematopoietic cell lines were examined together with those of Arnt and P450IA1 .
 ( cell line: hematopoietic cell lines, None) , ( RNA: AhR mRNA, None) , ( protein: P450IA1, None) , ( protein: Arnt, 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 line: hematopoietic cell lines, None) , ( RNA: AhR mRNA, None) , ( protein: P450IA1, None) , ( protein: Arnt, None) 