393
This study investigated the effect of TCDD on expression of the CD19 gene in a human B lymphocyte cell line .
 ( DNA: CD19 gene, None) , ( cell line: human B lymphocyte cell line, 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:
 ( DNA: CD19 gene, None) , ( cell line: human B lymphocyte cell line, None) 