1315
Several DNA clones were obtained by this procedure, one of which, clone 18 , is reported and characterized here.
 ( DNA: DNA clones, None) , ( DNA: clone 18, 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: DNA clones, None) , ( DNA: clone 18, None) 