6855
The results show that the CYP1A1 mRNA level induced by UV in the presence of tryptophan was higher than that induced by UV alone in both HaCaT cells and lymphocytes after 3 h of incubation post- UV irradiation.
 ( cell line: HaCaT cells, None) , ( cell type: lymphocytes, None) , ( protein: CYP1A1, None) , ( RNA: CYP1A1 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: HaCaT cells, None) , ( cell type: lymphocytes, None) , ( protein: CYP1A1, None) , ( RNA: CYP1A1 mRNA, None) 