5362
The 1.955-kb viral segment includes a dyad symmetry region located between two small nuclear RNA genes and is located upstream of the dihydrofolate reductase gene homolog .
 ( DNA: dyad symmetry region, None) , ( DNA: 1.955-kb viral segment, None) , ( DNA: small nuclear RNA genes, None) , ( protein: dihydrofolate reductase, None) , ( DNA: dihydrofolate reductase gene homolog, 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: dyad symmetry region, None) , ( DNA: 1.955-kb viral segment, None) , ( DNA: small nuclear RNA genes, None) , ( protein: dihydrofolate reductase, None) , ( DNA: dihydrofolate reductase gene homolog, None) 