2174
Most of these cells have rearranged their heavy-chain locus but not their light chain genes , suggesting that an active v-abl protein interferes with this differentiation step.
 ( DNA: light chain genes, None) , ( DNA: heavy-chain locus, None) , ( protein: v-abl protein, 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: light chain genes, None) , ( DNA: heavy-chain locus, None) , ( protein: v-abl protein, None) 