11342
Germline transcripts initiate from promoters upstream of the immunoglobulin switch region , and are necessary to target the appropriate switch region for recombination and switching.
 ( DNA: immunoglobulin switch region, None) , ( protein: Germline transcripts, None) , ( DNA: promoters, 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: immunoglobulin switch region, None) , ( protein: Germline transcripts, None) , ( DNA: promoters, None) 