7726
In the absence of tetracycline , GR mRNA and protein expression increased 2-3-fold, and cells expressed 48,000 receptors, a level nearly equivalent to that present in 6TG1.1 cells after 18 h of autoinduction.
 ( cell line: 6TG1.1 cells, None) , ( RNA: GR mRNA, 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: 6TG1.1 cells, None) , ( RNA: GR mRNA, None) 